Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class Main {
    public static void main(String[] args) {
        GameFrame gameFrame = new GameFrame();
        gameFrame.setVisible(true);
    }
}

class GameFrame extends JFrame {
    static final GraphicsDevice gd = (GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices())[0];
    static final boolean FULLSCREEN_SUPPORTED = gd.isFullScreenSupported();
    JButton fsButton = new JButton("Make Full Screen");
    boolean isFullscreen = false;

    public GameFrame() {
        setSize(300, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
        if (FULLSCREEN_SUPPORTED) {
            fsButton.addActionListener(e -> toggleFullscreen());
            add(fsButton);
        } else {
            add(new JLabel("Fullscreen mode is not supported on this device"));
        }
    }

    public void toggleFullscreen() {
        isFullscreen = !isFullscreen;
        setVisible(false);
        dispose();
        setUndecorated(isFullscreen);
        if (isFullscreen) {
            fsButton.setText("Make Windowed");
            gd.setFullScreenWindow(this);
            validate();
        } else {
            fsButton.setText("Make Full Screen");
            gd.setFullScreenWindow(null);
            setVisible(true);
        }
    }
}