的JFrame始終在最前面

Question

我做在Java程序，我使用JPanel爲the接口，但我有一個問題始終在最前面，我不想這樣。我希望當我恢復另一個窗口時，這將位於頂部。

我試着用：

this.setAlwaysOnTop(false); 

但它無法正常工作，框架總是不斷在上面。

下面是一個簡單的程序，與我的問題：

import javax.swing.AbstractButton; 
import javax.swing.JButton; 
import javax.swing.JPanel; 
import javax.swing.JFrame; 
import javax.swing.ImageIcon; 
import java.awt.*; 
import javax.swing.*; 
import java.awt.event.*; 


public class BorrarRegistro extends JPanel 
{ 

    public BorrarRegistro() { 
    super(new BorderLayout()); 

    JLabel insertar= new JLabel("Registro"); 
    JTextField borrar= new JTextField(); 
    JButton borrar1= new JButton("Borrar Registro"); 

    JPanel borrarRegistro= new JPanel(new GridLayout(4,1)); 
    borrarRegistro.add(insertar); 
    borrarRegistro.add(borrar); 
    borrarRegistro.add(borrar1); 

    JPanel images= new JPanel(new GridLayout(1,3)); 


    add(images,BorderLayout.NORTH); 
    add(borrarRegistro, BorderLayout.SOUTH); 

    } 

    private static void createAndShowGUI() { 

    //Create and set up the window. 
    JFrame frame = new JFrame("ClaseBase "); 
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

    // Create and set up the content pane. 
    BorrarRegistro newContentPane = new BorrarRegistro(); 
    newContentPane.setOpaque(true); //content panes must be opaque 
    frame.setContentPane(newContentPane); 

    // Display the window. 
    frame.pack(); 
    frame.setVisible(true); 

    } 

    public static void main(String[] args) { 
    //Schedule a job for the event-dispatching thread: 
    // creating and showing this application's GUI. 
    javax.swing.SwingUtilities.invokeLater(
      new Runnable() { 
       public void run() { 
       createAndShowGUI(); 
       } 

      }); 
    } 
} 

我怎樣才能解決這個問題呢？

Answer 1

你應該叫setAlwaysOnTop(false)當您創建框架。

private static void createAndShowGUI() { 

    //Create and set up the window. 
    JFrame frame = new JFrame("ClaseBase "); 
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

    // Create and set up the content pane. 
    Test newContentPane = new Test(); 
    newContentPane.setOpaque(true); //con 
    frame.setContentPane(newContentPane);// tent panes must be opaque 
    frame.setAlwaysOnTop(false); 

    // Display the window. 
    frame.pack(); 
    frame.setVisible(true); 

}