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如何在不关闭主程序的情况下关闭jframe

[英]How to close a jframe without closing the main program

 原文  2010-11-24 15:57:32  0   9    java/ user-interface

问题描述

I'm creating a program to keep track of a list of DVD's. 我正在创建一个程序来跟踪DVD的列表。 On the main page I have set up 2 JButtons. 在主页面上，我设置了2个JButtons。 When the user clicks the one that says new, a new JFrame from another class comes up with fields to enter information about a new DVD. 当用户单击一个表示新的JFrame时，另一个类的新JFrame会显示输入新DVD信息的字段。 I'm trying to make a cancel button on this second frame work so that when one clicks the cancel button, it brings back up the main GUI and closes the new entry GUI. 我正在尝试在第二帧上创建一个取消按钮，以便当单击取消按钮时，它会重新启动主GUI并关闭新的条目GUI。 Code is below, I cant figure out how to do it. 代码如下，我无法弄清楚如何做到这一点。

Main GUI page 主GUI页面 

package dvdlibrary;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;


public class bootPage extends javax.swing.JFrame {

    /** Creates new form bootPage */
    public bootPage() {
        initComponents();
    }



    @SuppressWarnings("unchecked")

    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        jLabel1.setText("DVD Library");
        getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(168, 11, -1, -1));

        jLabel2.setText("What would you like to do today?");
        getContentPane().add(jLabel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(113, 70, -1, -1));

        jButton1.setText("Create Record");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(50, 135, -1, -1));

        jButton2.setText("View Library");
        jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton2MouseClicked(evt);
            }
        });
        getContentPane().add(jButton2, new org.netbeans.lib.awtextra.AbsoluteConstraints(224, 135, 111, -1));

        pack();
    }// </editor-fold>                        

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         




    }                                        

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
      if(evt.getSource()== jButton1)
           dvdlibrary.createEntry.createE();


    }                                     

    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {                                      
       if(evt.getSource()== jButton2)
           dvdlibrary.movieChooser.movChoo();
    }                                     


    public static void bootP() {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new bootPage().setVisible(true);
                new bootPage().setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;


}

Create Entry page 创建条目页面 

package dvdlibrary;

public class createEntry extends javax.swing.JFrame {


    public createEntry() {
        initComponents();
    }


    @SuppressWarnings("unchecked")

    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jLabel6 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jComboBox1 = new javax.swing.JComboBox();
        jTextField2 = new javax.swing.JTextField();
        jTextField3 = new javax.swing.JTextField();
        jTextField4 = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jLabel1.setText("Title");

        jLabel2.setText("Genre");

        jLabel3.setText("Length");

        jLabel4.setText("Rating");

        jLabel5.setText("Description");

        jLabel6.setText("Year");

        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jButton1.setText("Input");

        jButton2.setText("Load");

        jButton3.setText("Save");

        jButton4.setText("Cancel");
        jButton4.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton4MouseClicked(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(19, 19, 19)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel5)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel2)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel1)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 174, Short.MAX_VALUE))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jLabel3)
                                    .addComponent(jLabel4)
                                    .addComponent(jLabel6))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 32, Short.MAX_VALUE)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(jTextField2)
                                    .addComponent(jTextField4)
                                    .addComponent(jTextField3, javax.swing.GroupLayout.DEFAULT_SIZE, 133, Short.MAX_VALUE)))))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(51, 51, 51)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(124, 124, 124)
                        .addComponent(jButton1))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(45, 45, 45)
                        .addComponent(jButton4)
                        .addGap(18, 18, 18)
                        .addComponent(jButton2)
                        .addGap(18, 18, 18)
                        .addComponent(jButton3)))
                .addGap(23, 23, 23))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(38, 38, 38)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel2)
                            .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(26, 26, 26)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel6)
                            .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(29, 29, 29)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel3)
                            .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(37, 37, 37)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel4)
                            .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(39, 39, 39)
                        .addComponent(jLabel5)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton3)
                        .addComponent(jButton2)
                        .addComponent(jButton4)))
                .addContainerGap())
        );

        pack();
    }                       

    private void jButton4MouseClicked(java.awt.event.MouseEvent evt) {                                      


    }                                     


    public static void createE() {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new createEntry().setVisible(true);

            }
        });
    }


    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    // End of variables declaration                   

}

9 个解决方案

解决方案1
 14  2010-11-24 16:13:53

I think you can also use DISPOSE_ON_CLOSE : 我想你也可以使用DISPOSE_ON_CLOSE ：

DISPOSE_ON_CLOSE (the default for JInternalFrame) DISPOSE_ON_CLOSE（JInternalFrame的默认值）

Hide and dispose of the window when the user closes it. 用户关闭窗口时隐藏和处理窗口。 This removes the window from the screen and frees up any resources used by it. 这将从屏幕中删除窗口并释放它使用的任何资源。

解决方案2
 6  2010-11-24 16:15:07

Did you read the API to find out other values for the setDefaultCloseOperation(...) method? 您是否阅读了API以找出setDefaultCloseOperation（...）方法的其他值？

You can use: 您可以使用：

DISPOSE_ON_CLOSE - the frame will close. DISPOSE_ON_CLOSE - 框架将关闭。 If this is the last open frame for the application then the JVM will terminate as well 如果这是应用程序的最后一个打开框架，那么JVM也将终止

HIDE_ON_CLOSE - the frame is just set to invisible. HIDE_ON_CLOSE - 框架只是设置为不可见。

when user clicks the one that says new a new jframe from another class comes up with fields to enter information about a new dvd. 当用户点击一个说新的时，另一个类的新jframe会出现输入有关新DVD的信息的字段。

The real problem with your program is that you are using a frame as the popup window. 程序的真正问题在于您使用框架作为弹出窗口。 You should be using a modal JDialog. 你应该使用模态JDialog。 An application should only ever have a single JFrame with multiple dialogs to gather additional information. 应用程序应该只有一个带有多个对话框的JFrame来收集其他信息。 A JDialog does not allow you to use EXIT_ON_CLOSE. JDialog不允许您使用EXIT_ON_CLOSE。

解决方案3
 2  2010-11-24 15:59:37

frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE)

解决方案4
 1  2013-02-22 00:44:55

要隐藏窗口而不实际关闭程序，请执行以下操作： 

f.setVisible(false);

解决方案5
 1  2014-01-30 17:20:26

If this is the case, make sure to use setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); 如果是这种情况，请确保使用setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); on your JFrame when initializing, not setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 在初始化时你的JFrame，而不是setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;

  • DISPOSE_ON_CLOSE will terminate your application when the last JFrame is closed. DISPOSE_ON_CLOSE将在最后一个JFrame关闭时终止您的应用程序。 EXIT_ON_CLOSE will terminate your application as soon as that JFrame is closed. 一旦JFrame关闭，EXIT_ON_CLOSE将终止您的应用程序。 HIDE_ON_CLOSE (default) will not terminate your application even if all JFrames are hidden. 即使隐藏了所有JFrame，HIDE_ON_CLOSE（默认）也不会终止您的应用程序。

解决方案6
 1  2014-12-11 20:43:09

If you just hide the program, using HIDE_ON_CLOSE or set.Visible(false) , that is not a very good choice, because if you do something larger with more frames, the hidden frames will still be running, slowing down computer performance. 如果您只是隐藏程序，使用HIDE_ON_CLOSE或set.Visible(false) ，这不是一个很好的选择，因为如果您使用更多帧执行更大的操作，隐藏的帧仍将运行，从而降低计算机性能。 The way, as other have said, is instead of using setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 正如其他人所说的那样，而不是使用setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); , which will terminate the program when you click "X, closing all of the frames, use the following: ，当您单击“X，关闭所有帧时，将终止程序，使用以下内容： 

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

解决方案7
 1  2011-02-27 07:33:29

I had a similar problem and used jFrameInstanceVariable.setVisible(false); 我遇到了类似的问题并使用了jFrameInstanceVariable.setVisible(false); as the action that occured when I hit my CANCEL button. 当我按下CANCEL按钮时发生的动作。 But every time I clicked the button that popped up the JFrame afterward, all the old content was still there in addition to the new content created from pressing the button. 但每次我点击之后弹出JFrame的按钮时，除了按下按钮创建的新内容之外，所有旧内容仍然存在。

I fixed this by making a new instance of JFrame every time the button is pressed that pops up the JFrame. 每次按下弹出JFrame的按钮时，我都会通过创建一个新的JFrame实例来解决这个问题。

解决方案8
 0  2015-09-07 14:03:03

If your using a button like I think you said you were 如果你使用像我认为你说的那样的按钮 

this.dispose();

will do the trick.. 会做的伎俩..

解决方案9
 0  2017-08-15 04:59:03

Try putting this.dispose(); 试试把this.dispose(); inside the cancel button method. 在取消按钮方法内。

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