JDK1.8 新特性学习

Posted 2022-04-27 wcgstudy

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JDK1.8 引入了函数式编程lambda，使编程变得简洁.

可以用lambda表达式替代匿名函数

package javaJVM;

import java.awt.Event;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Test1 extends JFrame
    
    private JButton jb;
    
    public Test1() 
        this.setBounds(200,200,400,300);
        this.setTitle("lambda测试");
        
        jb = new JButton("click");
        this.add(jb);
        this.setVisible(true);
        /*jb.addActionListener(new ActionListener() 
            
            @Override
            public void actionPerformed(ActionEvent e) 
                // TODO Auto-generated method stub
                System.out.println("click");
            
        );*/
        jb.addActionListener(Event -> System.out.println("hello"));
        
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        
    
    
    public static void main(String[] args) 
        
        new Test1();

package javaJVM;

import java.awt.Event;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Test1 extends JFrame

   private JButton jb;

   public Test1()
       this.setBounds(200,200,400,300);
       this.setTitle("lambda测试");

       jb = new JButton("click");
       this.add(jb);
       this.setVisible(true);
       /*jb.addActionListener(new ActionListener()

           @Override
           public void actionPerformed(ActionEvent e)
               // TODO Auto-generated method stub
               System.out.println("click");

       );*/
       jb.addActionListener(Event -> System.out.println("hello"));

       this.setDefaultCloseOperation(EXIT_ON_CLOSE);



   public static void main(String[] args)

       new Test1();

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