Question

 What is displayed to the screen when the following code executes?

Counter c1 = new Counter();
Counter c2 = new Counter();
Counter c3 = new Counter();
Counter[] A = {c1, c2};
JAVA

A[0].clickButton();
Counter[] B = new Counter[2];
for(int i = 0; i < A.length; i++)
    B[i] = A[i];
B[0] = c3;
System.out.println("A[0] is " + A[0].getCount());
System.out.println("B[0] is " + B[0].getCount());

Answer 1

Please find the answer below.
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It depends on the code for the count class.

If it is as below.

package staticclasses;

class Counter{
   private int count;
  
   Counter(){
       count=0;
   }
   public void clickButton() {
       count++;
   }
   public int getCount() {
       return count;
   }

}
public class Main {
   public static void main(String[] args) {

       Counter c1 = new Counter();
       Counter c2 = new Counter();
       Counter c3 = new Counter();
       Counter[] A = {c1, c2};
       A[0].clickButton();
       Counter[] B = new Counter[2];
       for(int i = 0; i < A.length; i++)
           B[i] = A[i];
       B[0] = c3;
       System.out.println("A[0] is " + A[0].getCount());
       System.out.println("B[0] is " + B[0].getCount());
   }
}

output will be