多个Java ActionListener

Question

So what I have been trying to do for past month is set multiple action listeners for my buttons without succes. I have 3 buttons, and i want them to print some text on text area depending which button is pressed. So could somebody tell me where exactly do I have to write those listeners? Thanks in advance.

public class Lotto  {
public static void main(String[] args) {
    Color color1 = new Color(250,250,250);
    Color color2 = new Color(200,200,200);
    Color color3 = new Color(255,66,66);

    JFrame f1 = new JFrame(); 

    f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    f1.setSize(400,400);
    f1.setVisible(true);
    f1.setLayout(null);
    f1.setResizable(false);

    JButton start = new JButton("Start");
    start.setBounds(25,325,100,25);
    f1.add(start);

    JButton stop = new JButton("Stop");
    stop.setBounds(150,325,100,25);
    f1.add(stop);

    JButton exit = new JButton("Exit");
    exit.setBounds(275,325,100,25);
    f1.add(exit);

    JTextArea ta1 = new JTextArea("Your inputs");
    ta1.setEditable(false);
    ta1.setBounds(25,125,350,50);
    ta1.setBackground(color2);
    f1.add(ta1);
    }
}

Answer 1

您可能想看一下Oracle的本教程。

Answer 2

Q: What have you tried?
A: I didn't.

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Anyway, AbstractButton.addActionListener is what you're looking for. Either construct a separate ActionListener for each JButton instance, or construct a single ActionListener that every JButton instance will use. With regard to the latter, use EventObject.getSource to determine which component fired the event.