使JTable动态大小

Question

我有一个表内Jpanel和表的大小是固定的，我想使它动态。如果我们最大限度的框架表的大小应增加

低于

是

public class LogsAutomationUIFrame extends JFrame { 

    private JPanel contentPane; 
    private JTextField textField; 
    private JTextField textField_1; 
    private JTextField textField_2; 
    private JTable table; 
    private JTextField fieldDownloadPath = new JTextField(30); 
    JLabel lblNewLabel_4; 
    JLabel lblNewLabel_3; 
    /** 
    * Launch the application. 
    */ 
    public static void main(String[] args) { 
     EventQueue.invokeLater(new Runnable() { 
      public void run() { 
       try { 
        LogsAutomationUIFrame frame = new LogsAutomationUIFrame(); 
        frame.setVisible(true); 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 
      } 
     }); 
    } 

    static DefaultTableModel model= new DefaultTableModel(0, 0); 
    private JPasswordField passwordField; 
    /** 
    * Create the frame. 
    */ 
    public LogsAutomationUIFrame() { 
     JFrame frame = new JFrame(); 
     table = new JTable(); 
     table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 
     table.setAutoCreateRowSorter(true); 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     setBounds(100, 100, 783, 567); 
     contentPane = new JPanel(); 
     contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 
     setContentPane(contentPane); 
     contentPane.setLayout(null); 

     JLabel lblEnvironment = new JLabel("Environment"); 
     lblEnvironment.setBounds(10, 44, 81, 21); 
     contentPane.add(lblEnvironment); 

     /*textField = new JTextField(); 
     textField.setBounds(103, 44, 109, 20); 
     contentPane.add(textField);*/ 
     //textField.setColumns(10); 
     String[] choices = { "CHOICE 1","CHOICE 2", "CHOICE 3","CHOICE 4","CHOICE 5","CHOICE 6"}; 

     final JComboBox<String> cb = new JComboBox<String>(); 
     //ComboBoxModel<String[]> choice = new ComboBoxModel<String[]>(); 
     final File folder = new File(""); 
     File folderParent = new File(folder.getAbsolutePath()); 
     List<String> choiceVal = listFilesForFolder(folderParent); 
     //List<String> choiceVal = new ArrayList<String>(); 

     cb.setModel(new ToComboBoxModel(choiceVal)); 
     cb.setBounds(103, 44, 109, 20); 
     cb.setVisible(true); 
     contentPane.add(cb); 

     JLabel Path = new JLabel("Path"); 
     Path.setBounds(10, 76, 46, 14); 
     contentPane.add(Path); 

     textField_1 = new JTextField(); 
     textField_1.setBounds(103, 73, 109, 20); 
     contentPane.add(textField_1); 
     textField_1.setColumns(10); 

     JLabel lblNewLabel = new JLabel("Search String"); 
     lblNewLabel.setBounds(10, 101, 81, 21); 
     contentPane.add(lblNewLabel); 

     textField_2 = new JTextField(); 
     textField_2.setBounds(103, 101, 109, 20); 
     contentPane.add(textField_2); 
     textField_2.setColumns(10); 

     JButton btnSearchString = new JButton("Search String"); 
     btnSearchString.setBounds(231, 103, 137, 23); 
     btnSearchString.addActionListener(new ActionListener() 
     { 
       public void actionPerformed(ActionEvent e) 
       { 
        try { 
        LogsAutomationServiceImpl serviceImpl = new LogsAutomationServiceImpl(); 


        String searchEnvironment = cb.getSelectedItem().toString(); 
        String searchPath = textField_1.getText(); 
        String searchString = textField_2.getText(); 
        /*Properties prop = LogsAutomationServiceImpl.getProperties(); 
        lblNewLabel_4.setText(prop.getProperty("results_limit"));*/ 
        //System.out.println("textField:::"+textField.getText()); 
        String password = passwordField.getText(); 
        model = serviceImpl.setTableData(searchEnvironment, searchPath, searchString, lblNewLabel_3, lblNewLabel_4, password); 
        table.setModel(model); 
        resizeColumnWidth(table); 
        table.setRowHeight(50); 
        } catch (Exception excption) { 
         excption.printStackTrace(); 
        } 
       } 
      }); 

     contentPane.add(btnSearchString); 

     JLabel lblNewLabel_1 = new JLabel("Results Number"); 
     lblNewLabel_1.setBounds(10, 150, 101, 14); 
     contentPane.add(lblNewLabel_1); 

     JLabel lblNewLabel_2 = new JLabel("Results Limit"); 
     lblNewLabel_2.setBounds(10, 178, 81, 14); 
     contentPane.add(lblNewLabel_2); 

     lblNewLabel_3 = new JLabel(); 
     lblNewLabel_3.setBounds(103, 150, 60, 14); 
     contentPane.add(lblNewLabel_3); 

     lblNewLabel_4 = new JLabel(); 
     lblNewLabel_4.setBounds(103, 178, 60, 14); 
     contentPane.add(lblNewLabel_4); 


     Object[] columnNames = {"host", "folder", "file", "grepResult"}; 
     Object[][] data = { 
        {"Buy", "IBM", new Integer(1000), new Double(80.50)}, 
        {"Sell", "MicroSoft", new Integer(2000), new Double(6.25)}, 
        {"Sell", "Apple", new Integer(3000), new Double(7.35)}, 
        {"Buy", "Nortel", new Integer(4000), new Double(20.00)} 
       }; 


     table.setModel(model); 
     // table.setCellSelectionEnabled(true); 
     table.addMouseListener(new java.awt.event.MouseAdapter() { 
      @Override 
      public void mouseClicked(java.awt.event.MouseEvent evt) { 
       int row = table.rowAtPoint(evt.getPoint()); 
       int col = table.columnAtPoint(evt.getPoint()); 

       if (col == 2) { 
        System.out.println("row is :::"+ row+":::"+col+"::::"+table.getValueAt(row, col)); 
        String fileName = table.getValueAt(row, col).toString(); 

        String hostName = table.getValueAt(row, 0).toString(); 
        String folderName = table.getValueAt(row, 1).toString(); 
        Exec obj = new Exec(); 
        String password = passwordField.getText(); 
        obj.downloadFile(hostName, cb.getSelectedItem().toString(), fileName, folderName, password); 
       } 
      } 
      }); 
     //table.getSelectionModel().addListSelectionListener(new CustomTableCellRenderer()); 
     //table.setDefaultRenderer(Object.class, new CustomTableCellRenderer()); 
     table.setSize(this.WIDTH, this.HEIGHT); 
     JScrollPane scrollPane = new JScrollPane(table); 
     scrollPane.setBounds(10, 267, 650, 205); 
     getContentPane().add(scrollPane); 
     //scrollPane.setSize(this.WIDTH, this.HEIGHT); 
     contentPane.add(scrollPane, BorderLayout.CENTER); 

     JLabel lblPassword = new JLabel("Password"); 
     lblPassword.setBounds(10, 212, 81, 14); 
     contentPane.add(lblPassword); 

     passwordField = new JPasswordField(); 
     passwordField.setBounds(103, 203, 109, 20); 
     contentPane.add(passwordField); 
     contentPane.setSize(this.WIDTH, this.HEIGHT); 
     //frame.getContentPane().add(contentPane); 


    } 



    public static void resizeColumnWidth(JTable table) { 

     final TableColumnModel columnModel = table.getColumnModel(); 
     for (int column = 0; column < table.getColumnCount(); column++) { 
      int width = 15; // Min width 
      for (int row = 0; row < table.getRowCount(); row++) { 
       TableCellRenderer renderer = table.getCellRenderer(row, column); 
       Component comp = table.prepareRenderer(renderer, row, column); 
       width = Math.max(comp.getPreferredSize().width +1 , width); 
      } 
      if(width > 500) 
       width=500; 
      columnModel.getColumn(column).setPreferredWidth(width); 

     } 
    } 

    class MyRenderer implements TableCellRenderer { 
      public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, 
       boolean hasFocus, int row, int column) { 
      JTextField editor = new JTextField(); 

      if (value != null) 
       editor.setText(value.toString()); 
      editor.setBackground((row % 2 == 0) ? Color.white : Color.cyan); 
      return editor; 
      } 
    } 

    public static List<String> listFilesForFolder(final File folder) { 
     List<String> fileNames = new ArrayList<String>(); 
     for (final File fileEntry : folder.listFiles()) { 
      if (fileEntry.isDirectory()) { 
       listFilesForFolder(fileEntry); 
      } else { 
       if(fileEntry.getName().toString().contains(".properties")) { 
        fileNames.add(fileEntry.getName()); 
       } 

      } 
     } 
     return fileNames; 
    } 
} 

我试了很多方法在寻找堆栈溢出链接，如设置大小为“this.widht”和“这个代码。高“他们都没有工作。

当我做出的JPanel宽度“this.width”并启动应用程序的大小是非常非常小， 当我试图把同样的事情滚动数据没有得到显示

Answer 1

我先添加JTable中JScrollPane中，再加入此JScrollPane到一个JPanel，具有类似于BorderLayout的一个LayoutManager，然后添加的JPanel到JFrame ......是这样的：

JPanel panel = new JPanel(); 
panel.setLayout(new BorderLayout()); 

JScrollPane scp = new JScrollPane(table); 
panel.add(BorderLayout.CENTER,scp); 

this.getContentPane().setLayout(new BorderLayout()); 
this.getContentPane().add(BorderLayout.CENTER,panel); 
this.pack(); 
this.setVisible(true); 

正如谢尔盖提到的，一旦，如有一个布局管理器，它岩...