如何在Swing中创建非模态对话框？

下面的示例展示了如何在基于swing的应用程序中创建非模态对话框。

使用以下API -

• JDialog() - 创建标准对话框。
• JDialog.getContentPane() - 获取对话框的内容面板。

示例

package com.zaixian.swingdemo;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class SwingTester {
   public static void main(String[] args) {
      createWindow();
   }

   private static void createWindow() {    
      JFrame frame = new JFrame("Swing非模态对话框(xuhuhu.com)");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      createUI(frame);
      frame.setSize(560, 200);      
      frame.setLocationRelativeTo(null);  
      frame.setVisible(true);
   }

   private static void createUI(final JFrame frame){  
      JPanel panel = new JPanel();
      LayoutManager layout = new FlowLayout();  
      panel.setLayout(layout);       

      JButton button = new JButton("点击这里开始~");
      final JDialog modelDialog = createDialog(frame);
      button.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
            modelDialog.setVisible(true);
         }
      });

      panel.add(button);
      frame.getContentPane().add(panel, BorderLayout.CENTER);    
   }   

   private static JDialog createDialog(final JFrame frame){
      final JDialog modelDialog = new JDialog(frame, "非模态对话框示例");
      modelDialog.setBounds(132, 132, 300, 200);
      Container dialogContainer = modelDialog.getContentPane();
      dialogContainer.setLayout(new BorderLayout());
      dialogContainer.add(new JLabel("欢迎学习Java/Swing~")
      , BorderLayout.CENTER);    
      JPanel panel1 = new JPanel();
      panel1.setLayout(new FlowLayout());
      JButton okButton = new JButton("确定");
      okButton.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
            modelDialog.setVisible(false);
         }
      });

      panel1.add(okButton);
      dialogContainer.add(panel1, BorderLayout.SOUTH);

      return modelDialog;
   }
}

执行上面示例代码，得到以下结果：