java - Java Swing Button

Question

I've written this:

JButton saveButton = new JButton(saveAction);

How do I then call it so that it displays within the window? (I've already got the code for the window, I just don't know how to call it so it shows)

Answer 1

首先，您应该为窗口创建一些 ContentPane（我猜您的意思是 JFrame）。将按钮直接添加到窗口不是一个好主意：P 接下来，您可以将按钮添加到该窗格：

panel.addComponent(button);

最后要做的是：

frame.setContentPane(panel)

这就是全部：P 简而言之；）

Answer 2

使用这样的东西

public class MainWindow extends JFrame {
    public static void main(String[] args) {
        MainWindow frame = new MainWindow();
        frame.setVisible(true);
    }

    public MainWindow() throws IOException {
        setTitle("Conveyor");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 851, 515);
        contentPane = new JPanel();
        JButton refreshButton = new JButton("refresh");
        contentPane.add(refreshButton, BorderLayout.EAST);
    }
}

Answer 3

saveButton.setVisible(true);

your_window.add(saveButton);

就这样。