A terrible example of using Listeners in a Swing application, do not try this at home

AwesomePanel.java

// this code had been heavily adjusted for the sake of readability

JTable tbl = new JTable(new MyTableModel());
tbl.addMouseListener(new ButCmd(this, ButCmd.CMD_UPDATE));

// [...]

JPanel panel = new JPanel(new FlowLayout());
JButton jb;

// New button T1
panel.add( jb = new JButton(getLabel("NEW_T1")));
jb.addActionListener(new ButCmd(this, ButCmd.CMD_NEW_T1));
jb.setMnemonic(getLabel("NEW_T1_MNEMONIC").charAt(0));

// New button T2
panel.add( jb = new JButton(getLabel("NEW_T2")));
jb.addActionListener(new ButCmd(this, ButCmd.CMD_NEW_T2));
jb.setMnemonic(getLabel("NEW_T2_MNEMONIC").charAt(0));

// New button T3
panel.add(jb = new JButton(getLabel("NEW_T3")));
jb.addActionListener(new ButCmd(this, ButCmd.CMD_NEW_T3));
jb.setMnemonic(getLabel("NEW_T3_MNEMONIC").charAt(0));

// Update button
panel.add(jb = new JButton(getLabel("UPD")));
jb.addActionListener(new ButCmd(this, ButCmd.CMD_UPDATE));
jb.setMnemonic(getLabel("UPD_MNEMONIC").charAt(0));

// Refresh button
panel.add(jb = new JButton(getLabel("REFRESH")));
jb.addActionListener(new ButCmd(this, ButCmd.CMD_REFRESH));
jb.setMnemonic(getLabel("REFRESH_MNEMONIC").charAt(0));

// [...]

// Inner class for processing actions
public class ButCmd extends MouseAdapter implements ActionListener {
    public static final int CMD_CANCEL = 0;
    public static final int CMD_NEW_T1 = 1;
    public static final int CMD_NEW_T2 = 2;
    public static final int CMD_NEW_T3 = 3;
    public static final int CMD_UPDATE = 4;
    public static final int CMD_REFRESH = 5;
    
    private int cmd;
    private Panel panel;
    
    public ButCmd(Panel parent, int cmd) {
      panel = parent;
      cmd = cmd;
    }
    
    public void actionPerformed(ActionEvent event) {
      switch (cmd) {
        case CMD_NEW_T1 :
          panel.cmdNewT1();
          break;
        case CMD_NEW_T2 :
          panel.cmdNewT2();
          break;
        case CMD_NEW_T3 :
          panel.cmdNewT3();
          break;
        case CMD_UPDATE :
          panel.cmdUpdate();
          break;
        case CMD_REFRESH :
          panel.refresh();
          break;
      }
    }
    
    public void mouseClicked(MouseEvent e) {
      if (e.getClickCount() != 1 && cmd == CMD_UPDATE) {
        panel.cmdUpdate();
      }
    }
  }