Question

我已经设置了JButton，除了它什么都没有。有人能告诉我如何将命令如system.out.println或某些Scanner命令添加到JButton中吗？

这是我的代码行。这很简单，我只是测试JButton将它添加到我的其他程序

    import javax.swing.*;

    public class Swing extends JFrame {
    JButton load = new JButton("Load");
    JButton save = new JButton("Save");
    JButton unsubscribe = new JButton("Unsubscribe");

    public ButtonFrame() {
        super ("ButtonFrame");
        setSize(140, 170);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel pane = new JPanel();
        pane.add(load);
        pane.add(save);
        pane.add(unsubscribe);
        add(pane);
        setVisible(true);
}

    public static void main(String[] arguments) {
        ButtonFrame bf = new ButtonFrame();
    }
}

Answer 1

请参阅How to Write an Action Listener。

我建议您阅读整个教程（或保留一个链接以供参考），因为它包含所有Swing基础知识。

Answer 2

希望这有帮助

load.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e)            {
        //Here goes the action (method) you want to execute when clicked
        System.out.println("You clicked the button load");
    }
});   
//The same for save button
save.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e)            {
        //Here goes the action (method) you want to execute when clicked
         System.out.println("You clicked the button save");
    }
});

如何让JButton做点什么

2 个答案: