Java隐藏JTabbedPane

Question

当我点击tab1或tab2时，我希望Japel显示会隐藏或显示，我想要的结果如图2所示。我使用命令jPanel2.setPreferredSize(new Dimension(0, 0));

例如：如果我有10个，我需要为每个选项卡设置PreferredSize为10 japanel。我想问是否有更简单的方法。

点击我的选项卡事件无法正常工作。请帮忙解决。

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package main;

import java.awt.Dimension;

/**
 *
 * @author KhongTuyen
 */
public class demo extends javax.swing.JFrame {

    /**
     * Creates new form demo
     */
    public demo() {
        initComponents();
        jPanel2.setVisible(false);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jTabbedPane1 = new javax.swing.JTabbedPane();
        jPanel4 = new javax.swing.JPanel();
        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTabbedPane1.setTabPlacement(javax.swing.JTabbedPane.BOTTOM);
        jTabbedPane1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jTabbedPane1MouseClicked(evt);
            }
        });
        jTabbedPane1.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                jTabbedPane1StateChanged(evt);
            }
        });

        jPanel4.setPreferredSize(new java.awt.Dimension(395, 0));

        javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
        jPanel4.setLayout(jPanel4Layout);
        jPanel4Layout.setHorizontalGroup(
            jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 395, Short.MAX_VALUE)
        );
        jPanel4Layout.setVerticalGroup(
            jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 0, Short.MAX_VALUE)
        );

        jTabbedPane1.addTab("tab1", jPanel4);

        jPanel1.setPreferredSize(new java.awt.Dimension(395, 0));

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 395, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 0, Short.MAX_VALUE)
        );

        jTabbedPane1.addTab("tab2", jPanel1);

        getContentPane().add(jTabbedPane1, java.awt.BorderLayout.PAGE_START);

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 253, Short.MAX_VALUE)
        );

        getContentPane().add(jPanel2, java.awt.BorderLayout.CENTER);

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

    private void jTabbedPane1MouseClicked(java.awt.event.MouseEvent evt) {                                          
        int count = 0;
        if (count % 2 != 0) {
            jPanel2.setPreferredSize(new Dimension(0, 100));
            jPanel1.setPreferredSize(new Dimension(0, 100));
        } else {
            jPanel2.setPreferredSize(new Dimension(0, 0));
            jPanel1.setPreferredSize(new Dimension(0, 0));
        }
        count++;
    }                                         

    private void jTabbedPane1StateChanged(javax.swing.event.ChangeEvent evt) {                                          
        // TODO add your handling code here:
    }                                         

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(demo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(demo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(demo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(demo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new demo().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel4;
    private javax.swing.JTabbedPane jTabbedPane1;
    // End of variables declaration                   
}

- Ma Tâm

Answer 1

使用JSplitPane。您可以单击分隔符上的按钮，使分隔符到达最小或最大值。

但是，为了使分隔符达到最小值，getMinimumSize()方法必须返回一个维度为(0, 0)的尺寸。

阅读Swing教程中关于如何使用拆分窗格的章节以获取更多信息和示例。

- camickr

Answer 2

你是指类似这样的内容吗？

import java.awt.BorderLayout;
import java.awt.Font;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class TabSample {
  static void add(JTabbedPane tabbedPane, String text) {
    String text1 = "";
    JPanel panel = new JPanel();
    if (text.equals("tab1")){
     text1 = "";
    }
     else
    {
     text1 = text;


    }    


    JLabel label = new JLabel(text1);
    label.setFont(new Font(null,Font.BOLD,30));

    label.setText(text1);

    panel.add(label);
    tabbedPane.addTab(text,label);
  }

  public static void main(String args[]) {
    JFrame frame = new JFrame("Tabbed Pane Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.setTabPlacement(JTabbedPane.BOTTOM);
    String titles[] = { "tab1", "Jpanel Display 2"};
    for (int i = 0, n = titles.length; i < n; i++) {


      add(tabbedPane, titles[i]);
    }

    ChangeListener changeListener = new ChangeListener() {
      public void stateChanged(ChangeEvent changeEvent) {
        JTabbedPane sourceTabbedPane = (JTabbedPane) changeEvent.getSource();
        int index = sourceTabbedPane.getSelectedIndex();
        System.out.println("Tab changed to: " + sourceTabbedPane.getTitleAt(index));
      }
    };
    tabbedPane.addChangeListener(changeListener);
    frame.add(tabbedPane, BorderLayout.CENTER);
    frame.setSize(400, 150);
    frame.setVisible(true);
  }
}

- Ingram