一个动作侦听器，两个JButton

将actionCommand设置到每个按钮。

//将动作命令设置到两个按钮上。

 btnOne.setActionCommand("1"); btnTwo.setActionCommand("2");public void actionPerformed(ActionEvent e) { int action = Integer.parseInt(e.getActionCommand()); switch(action) { case 1:         //doSomething         break; case 2:          // doSomething;         break; }}

更新：

public class JBtnExample {    public static void main(String[] args) {        JButton btnOne = new JButton();        JButton btnTwo = new JButton();        ActionClass actionEvent = new ActionClass();        btnOne.addActionListener(actionEvent);     btnTwo.addActionListener(actionEvent);        btnOne.setActionCommand("1");        btnTwo.setActionCommand("2");    }}class ActionClass implements ActionListener {    @Override    public void actionPerformed(ActionEvent e) {        int action = Integer.parseInt(e.getActionCommand());        switch (action) {        case 1: // DOSomething break;        case 2: // DOSomething break; default: break;        }    }}