去掉 Ctrl ＋ A 全选

 import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 import javax.swing.table.*;
 
 public class Table {
     public static void main(final String[] args) {
         java.awt.EventQueue.invokeLater(new Runnable(){
                 public void run(){
                     DefaultTableModel model = new DefaultTableModel(5,10){
                             public Object getValueAt(int r,int c){
                                 return Integer.valueOf(r*c);
                             }
                             public boolean isCellEditable(int r,int c){
                                 return false;
                             }
                         };
                     JTable table = new JTable(model);
                     final InputMap im = new ComponentInputMap(table);
                     final ActionMap am = new ActionMap();
                     im.put(KeyStroke.getKeyStroke("ctrl a"),"donothing");
                     am.put("donothing",null);
                     table.setInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW,im);
                     table.setActionMap(am);
                     JFrame frame = new JFrame("Table");
                     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                     frame.getContentPane().add(new JScrollPane(table));
                     frame.pack();
                     frame.setLocationRelativeTo(null);
                     frame.setVisible(true);
                 }
             });
     }
 }