進行的操作

Question

我有一個JDialog，並希望該商店後關閉它確認文本框的數據......現在我已經沒有問題，從存儲箱中的數據，但之後關閉Swing對話框，

操作後如何關閉此對話框？

似乎是一個簡單的事情，但我還沒有找到解決方案。

public class test extends JDialog { 

    private final JPanel contentPanel = new JPanel(); 

    public test() { 
     setBounds(100, 100, 450, 300); 
     getContentPane().setLayout(new BorderLayout()); 
     contentPanel.setLayout(new FlowLayout()); 
     contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5)); 
     getContentPane().add(contentPanel, BorderLayout.CENTER); 
     { 
      JPanel buttonPane = new JPanel(); 
      buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT)); 
      getContentPane().add(buttonPane, BorderLayout.SOUTH); 
      { 
       JButton okButton = new JButton("OK"); 
       okButton.setActionCommand("OK"); 
       buttonPane.add(okButton); 
       getRootPane().setDefaultButton(okButton); 
          okButton.addActionListener(new java.awt.event.ActionListener() { 
        public void actionPerformed(java.awt.event.ActionEvent e) { 
         try{ 

          int x=Integer.parseInt(textField.getText()); 
          saver.saveN(x); 

         }catch(Exception ecc){ 
          JOptionPane.showMessageDialog(Test.this,"error"); 
         } 
        } 
       }); 
      } 

     } 
    } 

} 

Answer 1

要麼使用Window#dispose或Window#setVisible(false)。

Answer 2

如果您打算與所有的字段值和組件狀態離開相同，當你關閉它再次使用一個JDialog，使用調用setVisible（假）。

在任何其他情況下，呼叫處理（），以避免殘留在所述存儲器中的的JDialog當不再需要它。

Answer 3

• 如果你使用這個對話框只有一次一次再有就是同使用dispose()爲setVisible(false)

• 的情況下，你調用這個方法比一次時間更多，那麼你可以使用HIDE_ON_CLOSE 或setVisible(false) ，better would be re_use this JDialog

編輯

import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
import javax.swing.Timer; 
import javax.swing.border.EmptyBorder; 
public class Test { 

    private static final long serialVersionUID = 1L; 
    private JDialog dialog = new JDialog(); 
    private final JPanel contentPanel = new JPanel(); 
    private Timer timer1; 
    private JButton killkButton = new JButton("Kill JDialog"); 

    public Test() { 
     contentPanel.setLayout(new FlowLayout()); 
     contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5)); 

     JPanel buttonPane = new JPanel(); 
     JButton okButton = new JButton("OK"); 
     okButton.setActionCommand("OK"); 
     buttonPane.add(okButton); 

     killkButton.setActionCommand("Kill JDialog"); 
     buttonPane.add(killkButton); 

     dialog.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE); 
     dialog.addWindowListener(new WindowListener() { 

      public void windowOpened(WindowEvent e) { 
      } 

      public void windowClosing(WindowEvent e) { 
       startTimer(); 
      } 

      public void windowClosed(WindowEvent e) { 
      } 

      public void windowIconified(WindowEvent e) { 
      } 

      public void windowDeiconified(WindowEvent e) { 
      } 

      public void windowActivated(WindowEvent e) { 
      } 

      public void windowDeactivated(WindowEvent e) { 
      } 
     }); 
     dialog.setLayout(new BorderLayout()); 
     dialog.getRootPane().setDefaultButton(okButton); 
     dialog.add(buttonPane, BorderLayout.SOUTH); 
     dialog.add(contentPanel, BorderLayout.CENTER); 
     dialog.pack(); 
     dialog.setLocation(100, 100); 
     dialog.setVisible(true); 
     setKeyBindings(); 
    } 

    private void setKeyBindings() { 
     killkButton.getInputMap(
       JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(
       KeyStroke.getKeyStroke("ENTER"), "clickENTER"); 
     killkButton.getActionMap().put("clickENTER", new AbstractAction() { 

      private static final long serialVersionUID = 1L; 

      @Override 
      public void actionPerformed(ActionEvent e) { 
       System.exit(0); 
      } 
     }); 
    } 

    private void startTimer() { 
     timer1 = new Timer(1000, new AbstractAction() { 

      private static final long serialVersionUID = 1L; 

      @Override 
      public void actionPerformed(ActionEvent e) { 
       SwingUtilities.invokeLater(new Runnable() { 

        @Override 
        public void run() { 
         dialog.setVisible(true); 
        } 
       }); 
      } 
     }); 
     timer1.setDelay(500); 
     timer1.setRepeats(false); 
     timer1.start(); 
    } 

    public static void main(String[] args) { 
     SwingUtilities.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       Test test = new Test(); 
      } 
     }); 
    } 
}