LambdaExpression.java

public class LambdaExpression {
    public static void main(String args[]) {
        TouchMe touchMe = new TouchMe(System.out::println);

        touchMe.touch();    // 1
        touchMe.touch();    // 2
        touchMe.touch();    // 3
        touchMe.touch();    // 4
        touchMe.touch();    // 5
    }
}