public class MyClass { private int instanceVariable; public static final double A_CONSTANT = 0.5; private static int numberOfInstances = 0; public MyClass(int i) { this.instanceVariable = i; numberOfInstances++; } public void increaseVariable() { instanceVariable++; } public int getValue() { return instanceVariable; } public static int getNumberOfInstances() { return numberOfInstances; } public static void main(String[] args) { MyClass mc1 = new MyClass(1); MyClass mc2 = new MyClass(2); mc2.increaseVariable(); System.out.println(mc1.instanceVariable); System.out.println(mc2.instanceVariable); System.out.println(MyClass.numberOfInstances); } }