Counter

Learning Outcome. Each instance of a class has its own instance variables

Write classes call Counter.java and counterTest.java. run and observe the outcome.

Counter
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package com.ait.ex5A;

public class Counter {
    private int count;

    public Counter() {
        count++;
    }

    public int getCount() {
        return count;
    }
}
CounterTest
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package com.ait.ex5A;

public class CounterTest {

    public static void main(String[] args) {
        Counter counter1 = new Counter();
        Counter counter2 = new Counter();
        Counter counter3 = new Counter();
        System.out.println(counter1.getCount());
        System.out.println(counter2.getCount());
        System.out.println(counter3.getCount());
    }
}

Console Output:

1
1
1

Counter.java
CounterTest.java