Test.java Source code

Introduction

Here is the source code for Test.java

Source

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsDevice.WindowTranslucency;
import java.awt.GraphicsEnvironment;
import java.awt.Paint;

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

public class Test {

    public static void main(String[] args) {
        GraphicsEnvironment envmt = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice device = envmt.getDefaultScreenDevice();

        if (!device.isWindowTranslucencySupported(WindowTranslucency.PERPIXEL_TRANSLUCENT)) {
            System.out.println("Translucent windows are not supported on your system.");
            System.exit(0);
        }
        JFrame.setDefaultLookAndFeelDecorated(true);
        ApplicationWindow window = new ApplicationWindow();
        window.setVisible(true);
    }
}

class ApplicationWindow extends JFrame {

    public ApplicationWindow() {
        setBackground(new Color(0, 0, 0, 0));
        this.setSize(200, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel() {
            @Override
            protected void paintComponent(Graphics gradient) {
                if (gradient instanceof Graphics2D) {
                    final int Red = 150;
                    final int Green = 150;
                    final int Blue = 150;
                    Paint paint = new GradientPaint(0.0f, 0.0f, new Color(Red, Green, Blue, 0), getWidth(),
                            getHeight(), new Color(Red, Green, Blue, 255));
                    Graphics2D gradient2d = (Graphics2D) gradient;
                    gradient2d.setPaint(paint);
                    gradient2d.fillRect(0, 0, getWidth(), getHeight());
                }
            }
        };
        this.setContentPane(panel);
    }
}