ConfluexBlogSupplierExample2

SupplierExample2.java

class MyIndex implements Supplier<Integer> {
    private int index = 0;
    @Override
    public Integer get() { 
        return index++;
    }
}
MyIndex i = new MyIndex();
i.get(); // --> 0
i.get(); // --> 1
i.get(); // --> 2 ...