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package hello;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;
import java.awt.*;
/**
* swing基础实例
* @author HZ20232
*
*/
public class Hello{
public static void main(String args[])throws Exception{
NewFrame frame1 = new NewFrame();
frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//一定要设置关闭
frame1.setVisible(true);
}
}
class NewFrame extends JFrame{
private JLabel label1;
private JButton button1;
private JTextField text1;
private JComboBox box;
private JMenuBar menuBar;
private JSlider slider;
private JSpinner spinner;
private JToolBar toolBar;
public NewFrame(){
super();
this.setSize(300,500);
this.getContentPane().setLayout(null);//设置布局控制器
// this.getContentPane().setLayout(new FlowLayout());//设置布局控制器
// this.getContentPane().setLayout(new GridLayout(1,2));//设置布局控制器,需要给出设定的行列数目
// this.getContentPane().setLayout(new BorderLayout());//设置布局控制器，以North,South,West,East，来控制控件布局
// this.getContentPane().setLayout(new GridBagLayout());//设置布局控制器
this.add(this.getTextField(),null);//添加文本框
this.add(this.getButton(),null);//添加按钮
this.add(this.getLabel(),null);//添加标签
this.add(this.getBox(),null);//添加下拉列表框
this.setJMenuBar(this.getMenu());//添加菜单
this.add(this.getSlider(),null);
this.add(this.getSpinner(),null);
this.add(this.getToolBar(),null);
this.setTitle("Hello World!");//设置窗口标题
}
private JToolBar getToolBar(){
if(toolBar==null){
toolBar = new JToolBar();
toolBar.setBounds(103,260,71,20);
toolBar.setFloatable(true);
}
return toolBar;
}
private JSpinner getSpinner(){
if(spinner==null){
spinner = new JSpinner();
spinner.setBounds(103,220, 80,20);
spinner.setValue(100);
}
return spinner;
}
private JSlider getSlider(){
if(slider==null){
slider = new JSlider();
slider.setBounds(103,200,100, 20);
slider.setMaximum(100);
slider.setMinimum(0);
slider.setOrientation(0);
slider.setValue(0);
}
return slider;
}
/**
* 菜单的级别JMenuBar->JMenu->JMenuItem
* 三级都是1：n的关系
* 最后添加菜单用的SetJMenuBar方法
* @return 建立好的菜单
*/
private JMenuBar getMenu(){
if(menuBar==null){
menuBar = new JMenuBar();
JMenu m1 = new JMenu();
m1.setText("文件");
JMenu m2 = new JMenu();
m2.setText("编辑");
JMenu m3 = new JMenu();
m3.setText("帮助");
JMenuItem item11 = new JMenuItem();
item11.setText("打开");
JMenuItem item12 = new JMenuItem();
item12.setText("保存");
JMenuItem item13 = new JMenuItem();
item13.setText("退出");
JMenuItem item21 = new JMenuItem();
item21.setText("复制");
JMenuItem item22 = new JMenuItem();
item22.setText("拷贝");
JMenuItem item23 = new JMenuItem();
item23.setText("剪切");
JMenuItem item31 = new JMenuItem();
item31.setText("欢迎");
JMenuItem item32 = new JMenuItem();
item32.setText("搜索");
JMenuItem item33 = new JMenuItem();
item33.setText("版本信息");
m1.add(item11);
m1.add(item12);
m1.add(item13);
m2.add(item21);
m2.add(item22);
m2.add(item23);
m3.add(item31);
m3.add(item32);
m3.add(item33);
menuBar.add(m1);
menuBar.add(m2);
menuBar.add(m3);
}
return menuBar;
}
/**
* 设置下拉列表框
* @return
*/
private JComboBox getBox(){
if(box==null){
box = new JComboBox();
box.setBounds(103,140,71,27);
box.addItem("1");
box.addItem("2");
box.addActionListener(new comboxListener());//为下拉列表框添加监听器类
}
return box;
}
private class comboxListener implements ActionListener{
public void actionPerformed(ActionEvent e){
Object o = e.getSource();
System.out.println(o.toString());
}
}
/**
* 设置标签
* @return 设置好的标签
*/
private JLabel getLabel(){
if(label1==null){
label1 = new JLabel();
label1.setBounds(34,49,53,18);
label1.setText("Name");
label1.setToolTipText("JLabel");
}
return label1;
}
/**
* 设置按钮
* @return 设置好的按钮
*/
private JButton getButton(){
if(button1==null){
button1 = new JButton();
button1.setBounds(103,110,71,27);
button1.setText("OK");
button1.setToolTipText("OK");
button1.addActionListener(new HelloButton());//添加监听器类，其主要的响应都由监听器类的方法实现
}
return button1;
}
/**
* 监听器类实现ActionListener接口，主要实现actionPerformed方法
* @author HZ20232
*
*/
private class HelloButton implements ActionListener{
public void actionPerformed(ActionEvent e){
System.out.println("Hello world!");
}
}
/**
* 设定文本域
* @return
*/
private JTextField getTextField(){
if(text1==null){
text1 = new JTextField();
text1.setBounds(96,49,160,20);
}
return text1;
}
}
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