將ActionListener添加到JTable的列標題中

Question

是否可以將ActionListener添加到JTable的列標題中。

這裏是我的表

現在，我想的ActionListener添加到列標題（如WQE，SDM）我想是能夠顯示在另一個窗口中列描述。

Answer 1

完全參見下面的工作

• 例如添加一個MouseListener的列標題
• 使用table.columnAtPoint（）來找出被單擊列標題

代碼：

// example table with 2 cols 
JFrame frame = new JFrame(); 
final JTable table = new JTable(new DefaultTableModel(new String[] { 
     "foo", "bar" }, 2)); 
frame.getContentPane().setLayout(
     new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS)); 
frame.getContentPane().add(table.getTableHeader()); 
frame.getContentPane().add(table); 
frame.pack(); 
frame.setVisible(true); 

// listener 
table.getTableHeader().addMouseListener(new MouseAdapter() { 
    @Override 
    public void mouseClicked(MouseEvent e) { 
     int col = table.columnAtPoint(e.getPoint()); 
     String name = table.getColumnName(col); 
     System.out.println("Column index selected " + col + " " + name); 
    } 
}); 

Answer 2

是的，這是可能的。您可以添加鼠標事件都列標題和單元格像這樣：

private class MyMouseAdapter extends MouseAdapter { 

    public void mousePressed(MouseEvent e) { 

     if (table.equals(e.getSource())) { 

      int colIdx = table.columnAtPoint(e.getPoint()); 
      int rowIdx = table.rowAtPoint(e.getPoint()); 
Object obj = table.getModel().getValueAt(rowIdx, colIdx) ;//This gets the value in the cells 
      String str = obj.toString();//This converts that Value to String 
      JTextField somefield = new JTextField();//Choose a JTextField 
      somefield.setText(str);//Populates the Clicked value to the JTextField 

      System.out.println("Row: " + rowIdx + " " + "Colulmn: " + colIdx); 
     } 
     else if (header.equals(e.getSource())) { 

      int selectedColumnIdx = header.columnAtPoint(e.getPoint()); 
      String colName = table.getColumnName(header.columnAtPoint(e.getPoint())); 

      System.out.println("Column Name: " + colName); 
      System.out.println("Selected Column: " + selectedColumnIdx); 
     } 
    } 
} 

修復示例代碼以滿足您的口味和偏好;