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classes |
|---|---|---|---|---|---|---|---|---|
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Petroleum.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Petroleum.java | package com.refinery.fuel;
public sealed class Petroleum implements LiquidFuel permits Diesel, Gasoline, Ethanol {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Hydrogen.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Hydrogen.java | package com.refinery.fuel;
public record Hydrogen() implements NaturalGas {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/NaturalGas.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/NaturalGas.java | package com.refinery.fuel;
public sealed interface NaturalGas extends GaseousFuel permits Hydrogen, Methane {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Ethanol.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Ethanol.java | package com.refinery.fuel;
public final class Ethanol extends Petroleum {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/SolidFuel.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/SolidFuel.java | package com.refinery.fuel;
public sealed interface SolidFuel extends Fuel permits Coke, Charcoal {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/GaseousFuel.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/GaseousFuel.java | package com.refinery.fuel;
public sealed interface GaseousFuel extends Fuel permits NaturalGas, Propane {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Fuel.java | Chapter08/P177_SealedFuelHierarchyWithRecords/src/main/java/com/refinery/fuel/Fuel.java | package com.refinery.fuel;
public sealed interface Fuel permits SolidFuel, LiquidFuel, GaseousFuel {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/modern/challenge/Main.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/rafinery/sealed/one/file/Fuel.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/rafinery/sealed/one/file/Fuel.java | package rafinery.sealed.one.file;
public sealed interface Fuel permits SolidFuel, LiquidFuel, GaseousFuel {}
sealed interface SolidFuel extends Fuel permits Coke, Charcoal {}
sealed interface LiquidFuel extends Fuel permits Petroleum {}
sealed interface GaseousFuel extends Fuel permits NaturalGas, Propane {}
final class Coke implements SolidFuel {}
final class Charcoal implements SolidFuel {}
sealed class Petroleum implements LiquidFuel permits Diesel, Gasoline, Ethanol {}
final class Diesel extends Petroleum {}
final class Gasoline extends Petroleum {}
final class Ethanol extends Petroleum {}
final class Propane implements GaseousFuel {}
sealed interface NaturalGas extends GaseousFuel permits Hydrogen, Methane {}
final class Hydrogen implements NaturalGas {}
sealed class Methane implements NaturalGas permits Chloromethane, Dichloromethane {}
final class Chloromethane extends Methane {}
sealed class Dichloromethane extends Methane permits Trichloromethane {}
final class Trichloromethane extends Dichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Dichloromethane.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Dichloromethane.java | package com.refinery.fuel;
public sealed class Dichloromethane extends Methane permits Trichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Coke.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Coke.java | package com.refinery.fuel;
public final class Coke implements SolidFuel {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Charcoal.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Charcoal.java | package com.refinery.fuel;
public final class Charcoal implements SolidFuel {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Propane.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Propane.java | package com.refinery.fuel;
public final class Propane implements GaseousFuel {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Chloromethane.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Chloromethane.java | package com.refinery.fuel;
public final class Chloromethane extends Methane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Gasoline.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Gasoline.java | package com.refinery.fuel;
public final class Gasoline extends Petroleum {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Methane.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Methane.java | package com.refinery.fuel;
public sealed class Methane implements NaturalGas permits Chloromethane, Dichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/LiquidFuel.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/LiquidFuel.java | package com.refinery.fuel;
public sealed interface LiquidFuel extends Fuel permits Petroleum {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Trichloromethane.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Trichloromethane.java | package com.refinery.fuel;
public final class Trichloromethane extends Dichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Diesel.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Diesel.java | package com.refinery.fuel;
public final class Diesel extends Petroleum {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Petroleum.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Petroleum.java | package com.refinery.fuel;
public sealed class Petroleum implements LiquidFuel permits Diesel, Gasoline, Ethanol {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Hydrogen.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Hydrogen.java | package com.refinery.fuel;
public final class Hydrogen implements NaturalGas {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/NaturalGas.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/NaturalGas.java | package com.refinery.fuel;
public sealed interface NaturalGas extends GaseousFuel permits Hydrogen, Methane {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Ethanol.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Ethanol.java | package com.refinery.fuel;
public final class Ethanol extends Petroleum {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/SolidFuel.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/SolidFuel.java | package com.refinery.fuel;
public sealed interface SolidFuel extends Fuel permits Coke, Charcoal {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/GaseousFuel.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/GaseousFuel.java | package com.refinery.fuel;
public sealed interface GaseousFuel extends Fuel permits NaturalGas, Propane {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Fuel.java | Chapter08/P175_SealedHierarchySeparateSources/src/main/java/com/refinery/fuel/Fuel.java | package com.refinery.fuel;
public sealed interface Fuel permits SolidFuel, LiquidFuel, GaseousFuel {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/modern/reflection/Inspector.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/modern/reflection/Inspector.java | package modern.reflection;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public final class Inspector {
private Inspector() {
throw new AssertionError("Cannot be instantiated");
}
public static List<Class> permittedClasses(Class clazz) {
if (clazz != null && clazz.isSealed()) {
return Arrays.asList(clazz.getPermittedSubclasses());
}
return Collections.emptyList();
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/modern/challenge/Main.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/modern/challenge/Main.java | package modern.challenge;
import com.refinery.fuel.Coke;
import com.refinery.fuel.Fuel;
import com.refinery.fuel.Methane;
import com.refinery.fuel.SolidFuel;
import modern.reflection.Inspector;
public class Main {
public static void main(String[] args) {
Coke coke = new Coke();
Methane methane = new Methane();
System.out.println("Fuel subclasses: " + Inspector.permittedClasses(Fuel.class));
System.out.println("SolidFuel subclasses: " + Inspector.permittedClasses(SolidFuel.class));
System.out.println("Coke subclasses: " + Inspector.permittedClasses(coke.getClass()));
System.out.println("Methane subclasses: " + Inspector.permittedClasses(methane.getClass()));
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Dichloromethane.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Dichloromethane.java | package com.refinery.fuel;
public sealed class Dichloromethane extends Methane permits Trichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Coke.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Coke.java | package com.refinery.fuel;
public final class Coke implements SolidFuel {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Charcoal.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Charcoal.java | package com.refinery.fuel;
public final class Charcoal implements SolidFuel {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Propane.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Propane.java | package com.refinery.fuel;
public final class Propane implements GaseousFuel {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Chloromethane.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Chloromethane.java | package com.refinery.fuel;
public final class Chloromethane extends Methane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Gasoline.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Gasoline.java | package com.refinery.fuel;
public final class Gasoline extends Petroleum {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Methane.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Methane.java | package com.refinery.fuel;
public sealed class Methane implements NaturalGas permits Chloromethane, Dichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/LiquidFuel.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/LiquidFuel.java | package com.refinery.fuel;
public sealed interface LiquidFuel extends Fuel permits Petroleum {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Trichloromethane.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Trichloromethane.java | package com.refinery.fuel;
public final class Trichloromethane extends Dichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Diesel.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Diesel.java | package com.refinery.fuel;
public final class Diesel extends Petroleum {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Petroleum.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Petroleum.java | package com.refinery.fuel;
public sealed class Petroleum implements LiquidFuel permits Diesel, Gasoline, Ethanol {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Hydrogen.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Hydrogen.java | package com.refinery.fuel;
public final class Hydrogen implements NaturalGas {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/NaturalGas.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/NaturalGas.java | package com.refinery.fuel;
public sealed interface NaturalGas extends GaseousFuel permits Hydrogen, Methane {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Ethanol.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Ethanol.java | package com.refinery.fuel;
public final class Ethanol extends Petroleum {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/SolidFuel.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/SolidFuel.java | package com.refinery.fuel;
public sealed interface SolidFuel extends Fuel permits Coke, Charcoal {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/GaseousFuel.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/GaseousFuel.java | package com.refinery.fuel;
public sealed interface GaseousFuel extends Fuel permits NaturalGas, Propane {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Fuel.java | Chapter08/P181_SealedClassesAndReflection/src/main/java/com/refinery/fuel/Fuel.java | package com.refinery.fuel;
public sealed interface Fuel permits SolidFuel, LiquidFuel, GaseousFuel {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/XmlExportVisitor.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/XmlExportVisitor.java | package modern.challenge;
public class XmlExportVisitor implements ElectricComponentVisitor {
public String export(ElectricComponent... args) {
StringBuilder sb = new StringBuilder();
sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
for (ElectricComponent ec : args) {
sb.append(ec.accept(this)).append("\n");
}
return sb.toString();
}
@Override
public String visit(Capacitor capacitor) {
return """
<capacitor>
<maxImpedance>%s</maxImpedance>
<dielectricResistance>%s</dielectricResistance>
<coreTemperature>%s</coreTemperature>
</capacitor>
""".formatted(capacitor.getMaxImpedance(), capacitor.getDielectricResistance(), capacitor.getCoreTemperature());
}
@Override
public String visit(Transistor transistor) {
return """
<transistor>
<length>%s</length>
<width>%s</width>
<threshholdVoltage>%s</threshholdVoltage>
</transistor>
""".formatted(transistor.getLength(), transistor.getWidth(), transistor.getThreshholdVoltage());
}
@Override
public String visit(Resistor resistor) {
return """
<resistor>
<resistance>%s</resistance>
<clazz>%s</clazz>
<voltage>%s</voltage>
<current>%s</current>
<power>%s</power>
</resistor>
""".formatted(resistor.getResistance(), resistor.getClazz(),
resistor.getVoltage(), resistor.getCurrent(), resistor.getPower());
}
@Override
public String visit(ElectricCircuit ec) {
return """
<electric_circuit_%s>
%s\
</electric_circuit_%s>
""".formatted(ec.getId(), subcircuit(ec), ec.getId()).indent(3);
}
private String subcircuit(ElectricCircuit ec) {
StringBuilder sb = new StringBuilder();
for (ElectricComponent comp : ec.getComps()) {
String xml = comp.accept(this);
sb.append(xml);
}
return sb.toString();
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/ElectricCircuit.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/ElectricCircuit.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class ElectricCircuit implements ElectricComponent {
private final int id;
private List<ElectricComponent> comps = new ArrayList<>();
public ElectricCircuit(int id) {
this.id = id;
}
public int getId() {
return id;
}
public List<ElectricComponent> getComps() {
return comps;
}
public void add(ElectricComponent... comp) {
comps.addAll(Arrays.asList(comp));
}
@Override
public String accept(ElectricComponentVisitor visitor) {
return visitor.visit(this);
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Transistor.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Transistor.java | package modern.challenge;
public class Transistor implements ElectricComponent {
private final float length;
private final float width;
private final float threshholdVoltage;
public Transistor(float length, float width, float threshholdVoltage) {
this.length = length;
this.width = width;
this.threshholdVoltage = threshholdVoltage;
}
public float getLength() {
return length;
}
public float getWidth() {
return width;
}
public float getThreshholdVoltage() {
return threshholdVoltage;
}
@Override
public String accept(ElectricComponentVisitor visitor) {
return visitor.visit(this);
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/ElectricComponent.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/ElectricComponent.java | package modern.challenge;
public interface ElectricComponent {
public String accept(ElectricComponentVisitor visitor);
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Main.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
Capacitor c1 = new Capacitor(28, 20, 40);
Capacitor c2 = new Capacitor(26, 22, 30);
Resistor r1 = new Resistor(100, 2.5f, 5, 50, 0.25f);
Transistor t1 = new Transistor(0.09f, 0.27f, 0.1f);
Resistor r2 = new Resistor(98, 2.4f, 4, 40, 0.22f);
Transistor t2 = new Transistor(0.07f, 0.25f, 0.2f);
Capacitor c3 = new Capacitor(25, 21, 29);
Resistor r3 = new Resistor(97, 2.3f, 5, 45, 0.20f);
ElectricCircuit ec1 = new ElectricCircuit(1);
ElectricCircuit ec2 = new ElectricCircuit(2);
ElectricCircuit ec3 = new ElectricCircuit(3);
ElectricCircuit ec4 = new ElectricCircuit(4);
ec1.add(c1, c2, r1, t1);
ec2.add(r2, t2, ec1);
ec3.add(c3, r3, ec2);
ec4.add(ec3, c1, c2);
export(ec4);
}
private static void export(ElectricComponent circuit) {
XmlExportVisitor exportVisitor = new XmlExportVisitor();
System.out.println(exportVisitor.export(circuit));
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Capacitor.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Capacitor.java | package modern.challenge;
public class Capacitor implements ElectricComponent {
private final int maxImpedance;
private final int dielectricResistance;
private final int coreTemperature;
public Capacitor(int maxImpedance, int dielectricResistance, int coreTemperature) {
this.maxImpedance = maxImpedance;
this.dielectricResistance = dielectricResistance;
this.coreTemperature = coreTemperature;
}
public int getMaxImpedance() {
return maxImpedance;
}
public int getDielectricResistance() {
return dielectricResistance;
}
public int getCoreTemperature() {
return coreTemperature;
}
@Override
public String accept(ElectricComponentVisitor visitor) {
return visitor.visit(this);
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Resistor.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/Resistor.java | package modern.challenge;
public class Resistor implements ElectricComponent {
private final int resistance;
private final float clazz;
private final int voltage;
private final int current;
private final float power;
public Resistor(int resistance, float clazz, int voltage, int current, float power) {
this.resistance = resistance;
this.clazz = clazz;
this.voltage = voltage;
this.current = current;
this.power = power;
}
public int getResistance() {
return resistance;
}
public float getClazz() {
return clazz;
}
public int getVoltage() {
return voltage;
}
public int getCurrent() {
return current;
}
public float getPower() {
return power;
}
@Override
public String accept(ElectricComponentVisitor visitor) {
return visitor.visit(this);
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/ElectricComponentVisitor.java | Chapter08/P180_SealedClassesAndVisitorPattern1/src/main/java/modern/challenge/ElectricComponentVisitor.java | package modern.challenge;
public interface ElectricComponentVisitor {
String visit(Capacitor capacitor);
String visit(Transistor transistor);
String visit(Resistor resistor);
String visit(ElectricCircuit circuit);
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/ElectricComponent.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/ElectricComponent.java | package modern.circuit;
public interface ElectricComponent {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/ElectricCircuit.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/ElectricCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public abstract class ElectricCircuit implements ElectricComponent {
public abstract void on();
public abstract void off();
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/SeriesCircuit.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/SeriesCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public class SeriesCircuit extends ElectricCircuit {
public SeriesCircuit(ElectricComponent... comp) {}
@Override
public void off() {}
@Override
public void on() {}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/ShortCircuit.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/ShortCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public class ShortCircuit extends ElectricCircuit {
public ShortCircuit(ElectricComponent... comp) {}
@Override
public void on() {}
@Override
public void off() {}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/ParallelCircuit.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/type/ParallelCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public class ParallelCircuit extends ElectricCircuit {
public ParallelCircuit(ElectricComponent... comp) {}
@Override
public void off() {}
@Override
public void on() {}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricPanel.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricPanel.java | package modern.circuit.panel;
import modern.circuit.type.ElectricCircuit;
import modern.circuit.capacitor.CeramicCapacitor;
import modern.circuit.capacitor.ElectrolyticCapacitor;
import modern.circuit.resistor.CarbonResistor;
import modern.circuit.resistor.MetalFilmResistor;
import modern.circuit.resistor.MetalOxideResistor;
import modern.circuit.resistor.MetalResistor;
import modern.circuit.transistor.BipolarTransistor;
import modern.circuit.transistor.FieldEffectTransistor;
import modern.circuit.type.ParallelCircuit;
import modern.circuit.type.SeriesCircuit;
import modern.circuit.type.ShortCircuit;
public class ElectricPanel implements ElectricBreaker {
private final ElectricCircuit centralCircuit;
private final ElectricCircuit peripheralCircuit;
private final ElectricCircuit auxiliaryCircuit;
public ElectricPanel() {
peripheralCircuit = new SeriesCircuit(
new ElectrolyticCapacitor(), new ElectrolyticCapacitor(),
new MetalFilmResistor(), new CarbonResistor()
);
auxiliaryCircuit = new ShortCircuit(
new CeramicCapacitor(), new ElectrolyticCapacitor(), new MetalResistor(),
new FieldEffectTransistor(), new FieldEffectTransistor()
);
centralCircuit = new ParallelCircuit(peripheralCircuit, auxiliaryCircuit,
new CeramicCapacitor(), new BipolarTransistor(), new MetalOxideResistor()
);
}
@Override
public void switchOn() {
auxiliaryCircuit.off();
peripheralCircuit.on();
centralCircuit.on();
}
@Override
public void switchOff() {
auxiliaryCircuit.on();
peripheralCircuit.off();
centralCircuit.off();
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricBreaker.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricBreaker.java | package modern.circuit.panel;
import modern.circuit.ElectricComponent;
public interface ElectricBreaker extends ElectricComponent {
void switchOn();
void switchOff();
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/CeramicCapacitor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/CeramicCapacitor.java | package modern.circuit.capacitor;
public class CeramicCapacitor extends Capacitor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/ElectrolyticCapacitor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/ElectrolyticCapacitor.java | package modern.circuit.capacitor;
public class ElectrolyticCapacitor extends Capacitor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/Capacitor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/Capacitor.java | package modern.circuit.capacitor;
import modern.circuit.ElectricComponent;
public abstract class Capacitor implements ElectricComponent {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/CarbonResistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/CarbonResistor.java | package modern.circuit.resistor;
public class CarbonResistor extends Resistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalOxideResistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalOxideResistor.java | package modern.circuit.resistor;
public class MetalOxideResistor extends MetalResistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalResistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalResistor.java | package modern.circuit.resistor;
public class MetalResistor extends Resistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalFilmResistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalFilmResistor.java | package modern.circuit.resistor;
public class MetalFilmResistor extends MetalResistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/Resistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/resistor/Resistor.java | package modern.circuit.resistor;
import modern.circuit.ElectricComponent;
public abstract class Resistor implements ElectricComponent {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/transistor/BipolarTransistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/transistor/BipolarTransistor.java | package modern.circuit.transistor;
public class BipolarTransistor extends Transistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/transistor/Transistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/transistor/Transistor.java | package modern.circuit.transistor;
import modern.circuit.ElectricComponent;
public abstract class Transistor implements ElectricComponent {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/transistor/FieldEffectTransistor.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/circuit/transistor/FieldEffectTransistor.java | package modern.circuit.transistor;
public class FieldEffectTransistor extends Transistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/challenge/client/Main.java | Chapter08/P172_ElectricPanelHierarchy/src/main/java/modern/challenge/client/Main.java | package modern.challenge.client;
import modern.circuit.panel.ElectricPanel;
public class Main {
public static void main(String[] args) {
ElectricPanel panel = new ElectricPanel();
panel.switchOn();
System.out.println("Power on ...");
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Triangle.java | Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Triangle.java | package modern.challenge;
public final class Triangle {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Quadrilateral.java | Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Quadrilateral.java | package modern.challenge;
public interface Quadrilateral {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Rectangle.java | Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Rectangle.java | package modern.challenge;
// since Triangle is final, Rectangle cannot extend it
// public class Rectangle extends Triangle implements Quadrilateral {}
public class Rectangle implements Quadrilateral {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Main.java | Chapter08/P178_SealedClassesCastConvInstanceof2/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void drawTriangle (Triangle t) {
// if(t instanceof Quadrilateral) { // the compiler knows that Triangle cannot be extended and cannot be an instance of Quadrilateral
// System.out.println("This is not a triangle");
// } else {
System.out.println("Drawing a triangle"); // this is the single option (t cannot be something else than a Triangle)
// }
}
public static void main(String[] args) {}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/ElectricComponent.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/ElectricComponent.java | package modern.circuit;
public interface ElectricComponent {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/ElectricCircuit.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/ElectricCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public abstract class ElectricCircuit implements ElectricComponent {
ElectricCircuit() {}
public abstract void on();
public abstract void off();
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/SeriesCircuit.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/SeriesCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public final class SeriesCircuit extends ElectricCircuit {
public SeriesCircuit(ElectricComponent... comp) {}
@Override
public void off() {}
@Override
public void on() {}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/ShortCircuit.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/ShortCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public final class ShortCircuit extends ElectricCircuit {
public ShortCircuit(ElectricComponent... comp) {}
@Override
public void on() {}
@Override
public void off() {}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/ParallelCircuit.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/type/ParallelCircuit.java | package modern.circuit.type;
import modern.circuit.ElectricComponent;
public final class ParallelCircuit extends ElectricCircuit {
public ParallelCircuit(ElectricComponent... comp) {}
@Override
public void off() {}
@Override
public void on() {}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricPanel.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricPanel.java | package modern.circuit.panel;
import modern.circuit.type.ElectricCircuit;
import modern.circuit.capacitor.CeramicCapacitor;
import modern.circuit.capacitor.ElectrolyticCapacitor;
import modern.circuit.resistor.CarbonResistor;
import modern.circuit.resistor.MetalFilmResistor;
import modern.circuit.resistor.MetalOxideResistor;
import modern.circuit.resistor.MetalResistor;
import modern.circuit.transistor.BipolarTransistor;
import modern.circuit.transistor.FieldEffectTransistor;
import modern.circuit.type.ParallelCircuit;
import modern.circuit.type.SeriesCircuit;
import modern.circuit.type.ShortCircuit;
public final class ElectricPanel implements ElectricBreaker {
private final ElectricCircuit centralCircuit;
private final ElectricCircuit peripheralCircuit;
private final ElectricCircuit auxiliaryCircuit;
public ElectricPanel() {
peripheralCircuit = new SeriesCircuit(
new ElectrolyticCapacitor(), new ElectrolyticCapacitor(),
new MetalFilmResistor(), new CarbonResistor()
);
auxiliaryCircuit = new ShortCircuit(
new CeramicCapacitor(), new ElectrolyticCapacitor(), new MetalResistor(),
new FieldEffectTransistor(), new FieldEffectTransistor()
);
centralCircuit = new ParallelCircuit(peripheralCircuit, auxiliaryCircuit,
new CeramicCapacitor(), new BipolarTransistor(), new MetalOxideResistor()
);
}
@Override
public void switchOn() {
auxiliaryCircuit.off();
peripheralCircuit.on();
centralCircuit.on();
}
@Override
public void switchOff() {
auxiliaryCircuit.on();
peripheralCircuit.off();
centralCircuit.off();
}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricBreaker.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/panel/ElectricBreaker.java | package modern.circuit.panel;
import modern.circuit.ElectricComponent;
interface ElectricBreaker extends ElectricComponent {
void switchOn();
void switchOff();
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/CeramicCapacitor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/CeramicCapacitor.java | package modern.circuit.capacitor;
public final class CeramicCapacitor extends Capacitor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/ElectrolyticCapacitor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/ElectrolyticCapacitor.java | package modern.circuit.capacitor;
public final class ElectrolyticCapacitor extends Capacitor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/Capacitor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/capacitor/Capacitor.java | package modern.circuit.capacitor;
import modern.circuit.ElectricComponent;
abstract class Capacitor implements ElectricComponent {
// Capacitor() {} - alternatively, if the class is declared public then we can close it via a package-private constructor
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/CarbonResistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/CarbonResistor.java | package modern.circuit.resistor;
public final class CarbonResistor extends Resistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalOxideResistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalOxideResistor.java | package modern.circuit.resistor;
public final class MetalOxideResistor extends MetalResistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalResistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalResistor.java | package modern.circuit.resistor;
public class MetalResistor extends Resistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalFilmResistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/MetalFilmResistor.java | package modern.circuit.resistor;
public final class MetalFilmResistor extends MetalResistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/Resistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/resistor/Resistor.java | package modern.circuit.resistor;
import modern.circuit.ElectricComponent;
abstract class Resistor implements ElectricComponent {
// Resistor() {} - alternatively, if the class is declared public then we can close it via a package-private constructor
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/transistor/BipolarTransistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/transistor/BipolarTransistor.java | package modern.circuit.transistor;
public final class BipolarTransistor extends Transistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/transistor/Transistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/transistor/Transistor.java | package modern.circuit.transistor;
import modern.circuit.ElectricComponent;
abstract class Transistor implements ElectricComponent {
// Transistor() {} - alternatively, if the class is declared public then we can close it via a package-private constructor
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/transistor/FieldEffectTransistor.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/circuit/transistor/FieldEffectTransistor.java | package modern.circuit.transistor;
public final class FieldEffectTransistor extends Transistor {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/challenge/client/Main.java | Chapter08/P173_ClosedElectricPanelHierarchy/src/main/java/modern/challenge/client/Main.java | package modern.challenge.client;
import modern.circuit.panel.ElectricPanel;
public class Main {
public static void main(String[] args) {
ElectricPanel panel = new ElectricPanel();
panel.switchOn();
System.out.println("Power on ...");
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/modern/challenge/Main.java | Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {}
} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/com/melon/co/Melon.java | Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/com/melon/co/Melon.java | package com.melon.co;
public sealed interface Melon {}
non-sealed interface Pumpkin extends Melon {}
final class Gac implements Melon {}
final class Cantaloupe implements Melon {}
final class Hami implements Melon {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/com/truck/co/Truck.java | Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/com/truck/co/Truck.java | package com.truck.co;
public sealed class Truck {}
final class SemiTrailer extends Truck {}
final class Tautliner extends Truck {}
final class Refrigerated extends Truck {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/com/refinery/fuel/Fuel.java | Chapter08/P174_SealedHierarchySameSourceFile/src/main/java/com/refinery/fuel/Fuel.java | package com.refinery.fuel;
public sealed interface Fuel {}
sealed interface SolidFuel extends Fuel {}
sealed interface LiquidFuel extends Fuel {}
sealed interface GaseousFuel extends Fuel {}
final class Coke implements SolidFuel {}
final class Charcoal implements SolidFuel {}
sealed class Petroleum implements LiquidFuel {}
final class Diesel extends Petroleum {}
final class Gasoline extends Petroleum {}
final class Ethanol extends Petroleum {}
final class Propane implements GaseousFuel {}
sealed interface NaturalGas extends GaseousFuel {}
final class Hydrogen implements NaturalGas {}
sealed class Methane implements NaturalGas {}
final class Chloromethane extends Methane {}
sealed class Dichloromethane extends Methane {}
final class Trichloromethane extends Dichloromethane {} | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter08/P176_SealedElectricPanelHierarchy/src/main/java/module-info.java | Chapter08/P176_SealedElectricPanelHierarchy/src/main/java/module-info.java | module P176_SealedElectricPanelHierarchy {
exports modern.circuit.panel;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
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