用模态的方式打开自定义JDialog，并获取返回值

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我是靠谱客的博主香蕉服饰，这篇文章主要介绍用模态的方式打开自定义JDialog，并获取返回值，现在分享给大家，希望可以做个参考。

JFrame的变量名为jf

JDialog的类名为Fff

[java] 
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 btnLoadImage.addMouseListener(new MouseAdapter() {  
             @Override  
             public void mouseClicked(MouseEvent e) {  
                 Fff myff = new Fff();  
                 //myff.setModal(false);  
                 myff.setModalityType(ModalityType.APPLICATION_MODAL);  
                 myff.setVisible(true);  
                   
                 //如果是点击确定，则文本框中输入的内容显示出来  
                 String strText;  
                 int iReturn;  
                   
                 iReturn = myff.f_GetCoseType();  
                 if (iReturn == 0) {  
                     lbImage.setText("选择了取消");  
                 }  
                 else  
                 {  
                     strText = myff.f_GetText();  
                     lbImage.setText(strText);  
                 }  
                   
             }                 
         });  

Fff的类

[java] 
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 package bb;  
   
 import java.awt.BorderLayout;  
 import java.awt.FlowLayout;  
   
 import javax.swing.JButton;  
 import javax.swing.JDialog;  
 import javax.swing.JOptionPane;  
 import javax.swing.JPanel;  
 import javax.swing.border.EmptyBorder;  
 import javax.swing.JTextField;  
 import java.awt.event.MouseAdapter;  
 import java.awt.event.MouseEvent;  
   
 /**  
 * @author 作者 E-mail:  
 * @version 创建时间：Sep 18, 2017 2:48:29 PM  
 * 类说明  
 */  
   
 public class Fff extends JDialog {  
   
     private final JPanel contentPanel = new JPanel();  
     private JTextField textOut;  
     private int iCloseType; //点击确定，该值为1，点击取消，该值为0  
       
     /** 
      * Launch the application. 
      */  
     public static void main(String[] args) {  
         try {  
             Fff dialog = new Fff();  
             dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);  
             dialog.setVisible(true);  
         } catch (Exception e) {  
             e.printStackTrace();  
         }  
     }  
   
     /** 
      * Create the dialog. 
      */  
     public Fff() {  
         iCloseType = 0 ;    //默认是点击取消按钮  
           
         setBounds(100, 100, 450, 300);  
         getContentPane().setLayout(new BorderLayout());  
         contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));  
         getContentPane().add(contentPanel, BorderLayout.CENTER);  
         contentPanel.setLayout(new BorderLayout(0, 0));  
         {  
             JPanel panel = new JPanel();  
             contentPanel.add(panel);  
             panel.setLayout(new BorderLayout(0, 0));  
             {  
                 textOut = new JTextField();  
                 panel.add(textOut, BorderLayout.NORTH);  
                 textOut.setColumns(10);  
             }  
         }  
         {  
             JPanel buttonPane = new JPanel();  
             buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));  
             getContentPane().add(buttonPane, BorderLayout.SOUTH);  
             {  
                 JButton okButton = new JButton("OK");  
                 okButton.addMouseListener(new MouseAdapter() {  
                     @Override  
                     public void mouseClicked(MouseEvent e) {  
                         //检查用户是否输入了内容  
                         if(f_chkInput()) {  
                             iCloseType = 1; //点击了确定性按钮  
                             dispose();  
                         }  
                     }  
                 });  
                   
                 okButton.setActionCommand("OK");  
                 buttonPane.add(okButton);  
                 getRootPane().setDefaultButton(okButton);  
             }  
             {  
                 JButton cancelButton = new JButton("Cancel");  
                 cancelButton.addMouseListener(new MouseAdapter() {  
                     @Override  
                     public void mouseClicked(MouseEvent e) {  
                         iCloseType = 0; //点击了取消按钮  
                         dispose();  
                     }  
                 });  
                 cancelButton.setActionCommand("Cancel");  
                 buttonPane.add(cancelButton);  
             }  
         }  
     }  
   
     //检查用户是否输入了文本  
     public boolean f_chkInput() {  
          String strText;  
          boolean bRet;  
         strText = textOut.getText();  
         if ( strText.length()==0 || strText==null) {  
             JOptionPane jMsg = new JOptionPane();  
             jMsg.showMessageDialog(null, "请输入内容");  
             bRet = false;  
         }  
         else  
         {  
             bRet = true;  
         }  
           
         return bRet;  
     }  
       
     public int f_GetCoseType() {  
         return iCloseType;    
     }  
     public String f_GetText() {  
         String strOut;  
         strOut = textOut.getText();  
         return strOut;  
     }  
 }  