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);