Question

急求求这段Java代码的注释

import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class asdf extends JFrame implements ActionListener{
boolean clicked = false;
final JLabel javaLabel = new JLabel();
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
asdf frame = new asdf();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame
*/
public asdf() {
super();
getContentPane().setLayout(null);
setBounds(100, 100, 341, 236);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

javaLabel.setText("JAVA");
javaLabel.setFont(new Font("", Font.PLAIN, 22));
javaLabel.setBounds(70, 33, 198, 69);
getContentPane().add(javaLabel);

final JButton boldButton = new JButton();
boldButton.setText("bold");
boldButton.addActionListener(this);
boldButton.setBounds(28, 132, 106, 28);
getContentPane().add(boldButton);

final JButton italicButton = new JButton();
italicButton.setText("italic");
italicButton.addActionListener(this);
italicButton.setBounds(185, 132, 106, 28);
getContentPane().add(italicButton);
//
}

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand().equals("bold")){
if(clicked == false){
clicked = true;
javaLabel.setFont(new Font("", Font.BOLD, 22));
}
else{
javaLabel.setFont(new Font("", Font.BOLD | Font.ITALIC, 22));
}
}
if(e.getActionCommand().equals("italic")){
if(clicked == false){
clicked = true;;
javaLabel.setFont(new Font("", Font.ITALIC, 22));
}
else{
javaLabel.setFont(new Font("", Font.BOLD | Font.ITALIC, 22));
}
}
}

}

Answer 1

package com.test;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
/*
* EventQueue处理机制
*/
public class test extends JFrame implements ActionListener{
//定义所需组件
boolean clicked = false;
final JLabel javaLabel = new JLabel();

//主函数
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
//线程调用函数run()
public void run() {
try {
test frame = new test();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* 初始化JFrame
*/
public test() {
super();
getContentPane().setLayout(null);
setBounds(100, 100, 341, 236);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

javaLabel.setText("JAVA");
javaLabel.setFont(new Font("", Font.PLAIN, 22));
javaLabel.setBounds(70, 33, 198, 69);
getContentPane().add(javaLabel);
final JButton boldButton = new JButton();
boldButton.setText("bold");
boldButton.addActionListener(this);
boldButton.setBounds(28, 132, 106, 28);
getContentPane().add(boldButton);
final JButton italicButton = new JButton();
italicButton.setText("italic");
italicButton.addActionListener(this);
italicButton.setBounds(185, 132, 106, 28);
getContentPane().add(italicButton);
}
//响应函数的重写
@Override
public void actionPerformed(ActionEvent e) {
// 当点击的键值为bold
if(e.getActionCommand().equals("bold")){
if(clicked == false){
clicked = true;
javaLabel.setFont(new Font("", Font.BOLD, 22));
}
else{
javaLabel.setFont(new Font("", Font.BOLD | Font.ITALIC, 22));
}
}
//当点击的键值为italic
if(e.getActionCommand().equals("italic")){
if(clicked == false){
clicked = true;;
javaLabel.setFont(new Font("", Font.ITALIC, 22));
}
else{
javaLabel.setFont(new Font("", Font.BOLD | Font.ITALIC, 22));
}
}
}
}