Foo.java

package com.demo;

public class Foo {
	public static void main(String[] args) {
		Bar bar = new Bar();
		System.out.println(bar.increment());
		System.out.println(bar.increment());
		System.out.println(bar.increment());
		System.out.println(bar.increment());
		System.out.println(bar.increment());
	}
}