Java Swing How to - Handle JTable keypressed event for the first key pressed

Question

We would like to know how to handle JTable keypressed event for the first key pressed.

Answer

import java.awt.BorderLayout;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
/*  w w w . ja  va  2s .  co m*/
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class Main extends JPanel {
  public Main() {
    DefaultTableModel model = new DefaultTableModel(0, 5) {
      @Override
      public boolean isCellEditable(int row, int column) {
        return false;
      }
    };
    JTable table = new JTable(model);
    for (int i = 0; i < 20; i++) {
      model.addRow(new String[] { i + ".1", i + ".2", i + ".3", i + ".4",
          i + ".5", });
    }
    add(table, BorderLayout.CENTER);
    table.addKeyListener(new KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        System.out.println("pressed");
        char key = e.getKeyChar();
        int selectedColumn = table.getSelectedColumn();
        for (int i = 0; i < model.getRowCount(); i++) {
          String value = (String) model.getValueAt(i, selectedColumn);
          model.setValueAt(value + key, i, selectedColumn);
        }
      }
    });
  }
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(new Main());
    frame.pack();
    frame.setVisible(true);
  }
}