Java摇摆按钮

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

saveButton.setVisible(true);

your_window.add(saveButton);

就这样。

Answer 2

Firstly you should create some ContentPane for window (I guess you mean JFrame). Adding a button directly to window is not a good idea :P Next you can add your button to that pane:

panel.addComponent(button);

The last thing to do is:

frame.setContentPane(panel)

And that's all :P Just in a nutshell ;)

Answer 3

Use something like this

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);
    }
}