java - JScrollPane 垂直滚动条太宽

Question

我正在使用 Netbeans GUI Builder 创建一个 GUI 应用程序(所以所有生成的代码都是由 Netbeans 生成的)。

在预览设计中一切看起来都很好，但是当我运行应用程序时，JScrollPane 显示得很糟糕...

...如您所见，只有一半的滚动条可见。

我已经尝试使用我自己的方法为 JScrollPane 手动设置 JScrollBar:

jScrollPane1.setVerticalScrollBar(getScrollBarForScrollPane());

但这给出了这个结果......

也许我需要更改 JScrollBar 或 JScrollPane 上的某些属性？

我一直在研究这个问题，所以我希望有人能提供一些建议! :)

这是我的全部代码...

package uk.co.mobilewebexpert.myappmonitor;

import javax.swing.ImageIcon;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;

public class MyAppMonitorJFrame extends javax.swing.JFrame {

    private final ImageIcon greenIcon = new ImageIcon(getClass().getResource("/green_light.jpg"));
    private final ImageIcon amberIcon = new ImageIcon(getClass().getResource("/amber_light.jpg"));
    private final ImageIcon redIcon = new ImageIcon(getClass().getResource("/red_light.jpg"));

    /**
     * Creates new form MyAppMonitorJFrame
     */
    public MyAppMonitorJFrame() {
        initComponents();

        DefaultTableCellRenderer rightRenderer = new DefaultTableCellRenderer();
        rightRenderer.setHorizontalAlignment(DefaultTableCellRenderer.CENTER);
        rightRenderer.setFont(new java.awt.Font("Tahoma", 1, 21));
        for (int i = 0; i < jTable1.getColumnCount(); i++) {
            jTable1.getColumn(jTable1.getColumnName(i)).setHeaderRenderer(rightRenderer);
            jTable1.getColumn(jTable1.getColumnName(i)).setCellRenderer(rightRenderer);

        }
        //jTable1.getTableHeader().setFont(new java.awt.Font("Tahoma", 1, 11));


        DefaultTableModel tableModel = (DefaultTableModel) jTable1.getModel();
        tableModel.addRow(new Object[]{greenIcon, "2", "3", "4", "5", "6", "7"});


        jScrollPane1.setInsets
    }

    /**
     * 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() {

        jPanel1 = new javax.swing.JPanel();
        jLabel6 = new javax.swing.JLabel();
        jLabel7 = new javax.swing.JLabel();
        jLabel8 = new javax.swing.JLabel();
        jLabel9 = new javax.swing.JLabel();
        jLabel10 = new javax.swing.JLabel();
        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();
        jPanel3 = new javax.swing.JPanel();
        jLabel11 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextPane1 = new javax.swing.JTextPane();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("MYOB");

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Status Summary", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 12))); // NOI18N

        jLabel6.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        jLabel6.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel6.setText("Total");
        jLabel6.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);

        jLabel7.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        jLabel7.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel7.setIcon(new javax.swing.ImageIcon(getClass().getResource("/green_light_2.jpg"))); // NOI18N
        jLabel7.setText("Online");
        jLabel7.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);

        jLabel8.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        jLabel8.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel8.setIcon(new javax.swing.ImageIcon(getClass().getResource("/amber_light_2.jpg"))); // NOI18N
        jLabel8.setText("Suspect");
        jLabel8.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);

        jLabel9.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        jLabel9.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel9.setIcon(new javax.swing.ImageIcon(getClass().getResource("/red_light_2.jpg"))); // NOI18N
        jLabel9.setText("Offline");
        jLabel9.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);

        jLabel10.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        jLabel10.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel10.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);

        jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel1.setText("?");

        jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel2.setText("?");

        jLabel3.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel3.setText("?");

        jLabel4.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel4.setText("?");

        jLabel5.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
            .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addComponent(jLabel6, javax.swing.GroupLayout.DEFAULT_SIZE, 34, Short.MAX_VALUE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jLabel7, javax.swing.GroupLayout.DEFAULT_SIZE, 59, Short.MAX_VALUE)
            .addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jLabel8, javax.swing.GroupLayout.DEFAULT_SIZE, 69, Short.MAX_VALUE)
            .addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jLabel9, javax.swing.GroupLayout.DEFAULT_SIZE, 60, Short.MAX_VALUE)
            .addComponent(jLabel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jLabel10, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addComponent(jLabel5, javax.swing.GroupLayout.DEFAULT_SIZE, 10, Short.MAX_VALUE))
            .addContainerGap()));
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
            .addComponent(jLabel6)
            .addComponent(jLabel7)
            .addComponent(jLabel8)
            .addComponent(jLabel9)
            .addComponent(jLabel10))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
            .addComponent(jLabel1)
            .addComponent(jLabel2)
            .addComponent(jLabel3)
            .addComponent(jLabel4)
            .addComponent(jLabel5))
            .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));

        jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Search", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 12))); // NOI18N

        jLabel11.setText("Enter device serial number");

        jTextField1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField1ActionPerformed(evt);
            }
        });

        jButton1.setText("Go");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
        jPanel3.setLayout(jPanel3Layout);
        jPanel3Layout.setHorizontalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
            .addComponent(jLabel11)
            .addGap(0, 0, Short.MAX_VALUE))
            .addGroup(jPanel3Layout.createSequentialGroup()
            .addComponent(jTextField1)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jButton1)))
            .addContainerGap()));
        jPanel3Layout.setVerticalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
            .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addComponent(jLabel11)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
            .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addComponent(jButton1))));

        jScrollPane1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Device Details", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 12))); // NOI18N
        jScrollPane1.setVerticalScrollBar(getScrollBarForScrollPane());

        jTable1.setBackground(new java.awt.Color(254, 254, 254));
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object[][]{
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null}
        },
            new String[]{
            "Serial Number", "Device Name", "Status", "Current Uptime", "Current Downtime", "Last Known Uptime"
        }));
        jTable1.setGridColor(new java.awt.Color(254, 254, 254));
        jTable1.setShowHorizontalLines(false);
        jTable1.setShowVerticalLines(false);
        jScrollPane1.setViewportView(jTable1);

        jScrollPane2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Log", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 12))); // NOI18N
        jScrollPane2.setViewportView(jTextPane1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)
            .addGroup(layout.createSequentialGroup()
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addComponent(jScrollPane2))
            .addContainerGap()));
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 328, Short.MAX_VALUE)
            .addContainerGap()));

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

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
    }

    private void jTextField1ActionPerformed(java.awt.event.ActionEvent 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(MyAppMonitorJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(MyAppMonitorJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(MyAppMonitorJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(MyAppMonitorJFrame.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 MyAppMonitorJFrame().setVisible(true);
            }
        });
    }

    public javax.swing.JScrollBar getScrollBarForScrollPane() {
        int width = 50; //set extremely large to exaggerate the issue
        javax.swing.JScrollBar jScrollBar = new javax.swing.JScrollBar(javax.swing.JScrollBar.VERTICAL);
        jScrollBar.setPreferredSize(new java.awt.Dimension(width, Integer.MAX_VALUE));
        return jScrollBar;
    }
// Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel10;
    private javax.swing.JLabel jLabel11;
    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.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JTable jTable1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextPane jTextPane1;
// End of variables declaration
}

Answer 1

如您在此快照中所见 from the reference ，你的滚动条是完美的: