Java8 Lumbda表达式 初步

package com.stono.test;
import java.util.function.BinaryOperator;
public class Test001 {
    public static void main(String[] args) {
        Runnable r = () -> System.out.println("hello");
        r.run();
        Runnable r2 = () -> {
            System.out.println("1");
            System.out.println("2");
        };
        r2.run();
        BinaryOperator<Long> b = (x, y) -> x + y;
        System.out.println(b);
        Long long1 = b.apply(1l, 2l);
        System.out.println(long1);
    }
}

        // btnNewButton.addActionListener(event -> System.out.println("button Click"));
        ActionListener actionListener = event -> System.out.println("button Click2");
        btnNewButton.addActionListener(actionListener);