public class Java8InAction {
    public static void main(String[] args) {

        /*Ch3 ch3 = new Ch3();
        ch3.all();

        Ch4 ch4 = new Ch4();
        ch4.all();*/

        Ch5 ch5 = new Ch5();
        ch5.all();
        /*Ch5_5 ch5_5 = new Ch5_5();
        ch5_5.all();*/
    }
}