Create 20. Phone book 2: Searching for a number

Week 3: Objects, files and exceptions/20. Phone book 2: Searching for a number

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+q20
+Write the method
+
+void findNumber(HashMap<String,String> numbers)
+
+which prompts the user to enter a name and then searches and 
+prints a number from the phone book that matches the name. 
+If the name is not found, the program prints an error message according to the model response.
+
+Example of a method call:
+public static void main(String[] args){
+    HashMap<String,String> numbers = new HashMap<>();
+    numbers.put("Tim", "12345");
+    numbers.put("Kate", "54321");
+    numbers.put("Jun", "55555");
+
+    findNumber(numbers);
+    findNumber(numbers);
+    findNumber(numbers);
+}
+
+
+
+Example execution:
+Name: Tim
+Number: 12345
+Name: Kate
+Number: 54321
+Name: Patricia
+Name not found
+ 
+ 
+ 
+ 
+ 
+ 
+import java.util.Random;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Collections;
+import java.util.ArrayList;
+import java.util.Scanner;
+
+
+
+public class Test{
+    public static void main(String[] args){
+        final Random r = new Random();
+
+            findNumber(numbers);
+    }
+
+
+    //q20
+    public static void findNumber(HashMap<String,String> numbers) {
+        // Let  user enter a name
+        Scanner reader = new Scanner(System.in);
+        System.out.print("Name: ");
+        String name = reader.nextLine();
+
+        // then find the name and their number
+        if (numbers.containsKey(name)) {
+            System.out.println("Number: " + numbers.get(name));
+        } 
+        else {
+            System.out.println("Name not found");
+        }
+    }
+
+    
+    
+}
+
+
+
+
+
+
+
+
+Phone book: 
+Kim: 39652
+Lena: 289930
+Pete: 769067
+Testing with input [Pete]
+Name: Pete
+Number: 769067
+
+Testing with input [Jane]
+Name: Jane
+Name not found
+
+Testing with input [Kim]
+Name: Kim
+Number: 39652
+
+Testing with input [Lena]
+Name: Lena
+Number: 289930
+
+
+