第十三周课程总结
- 菜单组件
JMenuBar
用来摆放JMenu组件，JMenuBar的常用方法
- JMenu常用方法
- JMenuItem
为菜单中加入菜单项，可以理解为一种特殊的JButton组件
JMenuItem的常用方法
- JFileChooser的常用方法
- 实现键盘监听
package org.lxh.demo18.keyeventdemo;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
//此类定义时直接继承了JFrame类丶实现KeyListener接口
public class MyKeyHandle extends JFrame implements KeyListener {
private JTextArea text=new JTextArea();
public MyKeyHandle(){
super.setTitle("Welcome To MLDN");
JScrollPane scr =new JScrollPane(text); //加入滚动条
scr.setBounds(5,5,300,200);
super.add(scr); //在窗体中加入组件
text.addKeyListener(this); //加入Key监听
super.setSize(310,210); //设置窗体大小
super.setVisible(true); //显示窗体
super.addWindowListener(new WindowAdapter() { //加入事件监听
//覆写窗口关闭方法
public void windowClosing(WindowEvent arg0) {
System.exit(1); //系统退出
}
});
public void keyTyped(KeyEvent e) { //键盘按下
text.append("："+e.getKeyChar()+"\n");
}
public void keyReleased(KeyEvent e) { //键盘松开
text.append("键盘"+KeyEvent.getKeyText(e.getKeyCode())+"松开\n");
}
public void keyTyped(KeyEvent e) { //键入内容
text.append("输入的内容是："+e.getKeyChar()+"\n");
public class MyKeyEventDemo01{
public void main(String[] args) {
new MyKeyHandle();
}
}
}
package org.lxh.demo18.jradiodemo;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.Jpanel;
import javax.swing.JRadioButton;
class MyRadio
{
//定义窗体
private JFrame frame = new JFrame("选择");
//获取窗体容器
private Container cont = frame.getContentPane();
//定义一个单按钮
private JRadioButton jradio1 = new JRadioButton("英雄联盟");
//定义一个单选纽
private JRadioButton jradio2 = new JRadioButton("穿越火线");
//定义一个单选纽
private JRadioButton jradio2 = new JRadioButton("地下城与勇士");
//定义一个单选纽
private JPanel pan = new JPanel();
//定义一个面板
public MyRadio()
{
//定义一个面板的设置边框显示条
pan.setBorder(BorderFactory.createTitledBorder("请选择你最喜欢的网络游戏"));
//定义排版样式
pan.setLayout(new GridLayout(3, 1));
pan.add(this.jradio1);
pan.add(this.jradio2);
cont.add(pan);
this.frame.setSize(400, 200);
this.frame.setVisible(true);
//监听窗体关闭事件
this.frame.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent obj)
{
System.exit(1);
}
});
}
}
public class JRadioButtonDemo01
{
public static void main(String args[])
{
new MyRadio();
}
}
