java - Can i create a window object with an existing frame

Question

Can I create window object instead of frame? I mean when I am creating a window object with an existing frame and showing it nothing happens.

Frame frame=new Frame(); Window window=new Window(frame); window.show(); // nothing happens here

Answer 1

你必须通过调用来显示框架.setVisible(true)，你可以这样做：

JFrame frame = new JFrame("Title of the Frame");
frame.setVisible(true);

如果你只想要一个里面有东西的窗口，你应该使用 JFrame。下面的示例将创建一个包含两个按钮的窗口。

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class SSCCE {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Title of the Frame");
        JPanel panel = new JPanel();

        JButton b1 = new JButton("Button 1");
        JButton b2 = new JButton("Button 2");

        panel.add(b1);
        panel.add(b2);
        frame.add(panel);

        frame.pack();
        frame.setVisible(true);
    }
}