将JButton添加到JTable中

Question

在swing中，是否有可能在表头上添加一个按钮。需要执行上述帖子的摆动。提前致谢。

Answer 1

是的，这是可能的。您可以简单地将按钮添加到表头。唯一要知道的是JTableHeader没有布局，所以你需要设置一个。

下面是这种简单的演示代码：

import java.awt.BorderLayout; 
import java.awt.FlowLayout; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.util.Vector; 

import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JOptionPane; 
import javax.swing.JScrollPane; 
import javax.swing.JTable; 
import javax.swing.SwingUtilities; 
import javax.swing.UIManager; 
import javax.swing.UnsupportedLookAndFeelException; 
import javax.swing.table.DefaultTableModel; 
import javax.swing.table.JTableHeader; 

public class TestTable2 { 

    protected void initUI() { 
     DefaultTableModel model = new DefaultTableModel(); 
     for (int i = 0; i < 5; i++) { 
      model.addColumn("Col-" + (i + 1)); 
     } 
     for (int i = 0; i < 200; i++) { 
      Vector<Object> row = new Vector<Object>(); 
      for (int j = 0; j < 5; j++) { 
       row.add("New cell - " + (j + 1)); 
      } 
      model.addRow(row); 
     } 
     JTable table = new JTable(model); 
     final JButton button = new JButton("Click me"); 
     button.addActionListener(new ActionListener() { 

      @Override 
      public void actionPerformed(ActionEvent e) { 
       JOptionPane.showMessageDialog(button, "You have clicked me"); 
      } 
     }); 
     JTableHeader header = table.getTableHeader(); 
     header.setLayout(new FlowLayout(FlowLayout.TRAILING, 5, 0)); 
     header.add(button); 
     JFrame frame = new JFrame(TestTable2.class.getSimpleName()); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     JScrollPane scrollpane = new JScrollPane(table); 
     frame.add(scrollpane, BorderLayout.CENTER); 
     frame.pack(); 
     frame.setVisible(true); 
    } 

    public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, 
      UnsupportedLookAndFeelException { 
     UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
     SwingUtilities.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       new TestTable2().initUI(); 
      } 
     }); 
    } 

}