Create 04. James' video calls

Week 5: Class hierarchies/04. James' video calls

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+The classes 'Call' and 'Videocall' are defined in the attached programme.
+See the definitions of the classes.
+
+Then type the method
+public static ArrayList<VideoCall> jamesCalls(ArrayList<VideoCall> calls)
+which takes a list of video calls as its parameter.
+
+
+The function of the method is to create and return a new list, to which only those calls are added from the original list where
+one of the persons is named "James Bond"
+the call has video on it.
+The order of the calls must follow the order of the original list.
+
+
+
+
+
+
+import java.util.Random;
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class Test{
+    public static void main(String[] args){
+        final Random r = new Random();
+        r.setSeed(Long.parseLong(args[0]));
+   
+        ArrayList<VideoCall> testList = new ArrayList<>();
+        testList.add(new VideoCall("James Bond", "Jack Nicholson", 23, true));
+        testList.add(new VideoCall("James Stallone", "James Bond", 53, true));
+        testList.add(new VideoCall("James Bond", "Andy McDuck", 11, false));
+        testList.add(new VideoCall("Mike Mikeson", "James Bond", 59, false));
+        testList.add(new VideoCall("Lisa Lisason", "Jack Nicholson", 2, true));
+        testList.add(new VideoCall("Mike Mikeson", "Nick Nickson", 47, true));
+        testList.add(new VideoCall("James Bond", "Mandy Madeup", 99, true));
+        testList.add(new VideoCall("Bond James", "James Bond", 143, true));
+        
+        Collections.shuffle(testList, r);
+        
+        System.out.println("Testlist:");
+        print(testList);
+        
+        System.out.println("James' video calls:");
+        ArrayList<VideoCall> correctList = jamesCalls(testList);
+        print(correctList);
+    }
+    
+    public static void print(ArrayList<VideoCall> calls) {
+        for (VideoCall vc : calls) {
+            System.out.println(vc);
+        }
+    }
+    
+
+
+    //ADD
+    public static ArrayList<VideoCall> jamesCalls(ArrayList<VideoCall> calls) {
+        // initialise list
+        ArrayList<VideoCall> listJamesCalls= new ArrayList<>();
+        
+        for (VideoCall vc: calls) {
+            // check1 - videocall
+            if (vc.isVideoCall()) {
+                // check2 - James Bond as a person on either side
+                if (vc.getPerson1().equals("James Bond") || vc.getPerson2().equals("James Bond")) {
+                    listJamesCalls.add(vc);
+                }
+            }
+        }
+        return listJamesCalls;
+    }
+
+   
+
+
+
+
+
+
+    
+}
+
+class Call {
+    private String person1;
+    private String person2;
+    private int duration;
+
+    public Call(String person1, String person2, int duration) {
+        this.person1 = person1;
+        this.person2 = person2;
+        this.duration = duration;
+    }
+    
+    public String getPerson1() {
+        return person1;
+    }
+    
+    public String getPerson2() {
+        return person2;
+    }
+    
+    public int getDuration() {
+        return duration;
+    }
+}
+
+class VideoCall extends Call {
+    private boolean isVideoCall;
+
+    public VideoCall(String person1, String person2, int duration, boolean isVideoCall) {
+        super(person1, person2, duration);
+        this.isVideoCall = isVideoCall;
+    }
+
+    public boolean isVideoCall() {
+        return isVideoCall;
+    } 
+    
+    public String toString() {
+        return getPerson1() + " - " + getPerson2() + ", " + getDuration() + " min., video: " +
+                (isVideoCall ? "on" : "off");
+    }
+}
+
+
+
+
+
+
+Testlist:
+James Bond - Mandy Madeup, 99 min., video: on
+James Bond - Jack Nicholson, 23 min., video: on
+Lisa Lisason - Jack Nicholson, 2 min., video: on
+James Stallone - James Bond, 53 min., video: on
+James Bond - Andy McDuck, 11 min., video: off
+Mike Mikeson - James Bond, 59 min., video: off
+Bond James - James Bond, 143 min., video: on
+Mike Mikeson - Nick Nickson, 47 min., video: on
+
+
+James' video calls:
+James Bond - Mandy Madeup, 99 min., video: on
+James Bond - Jack Nicholson, 23 min., video: on
+James Stallone - James Bond, 53 min., video: on
+Bond James - James Bond, 143 min., video: on
+
+
+
+