TransparentRectangles.java Source code

Introduction

Here is the source code for TransparentRectangles.java

Source

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;

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

public class TransparentRectangles extends JPanel {

    public void paint(Graphics g) {
        super.paint(g);
        Graphics2D g2d = (Graphics2D) g;
        for (int i = 1; i <= 10; i++) {
            g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, i * 0.1f));
            g2d.fillRect(50 * i, 20, 50, 50);
        }
    }

    public static void main(String[] args) {

        JFrame frame = new JFrame("Transparent Rectangles");
        frame.add(new TransparentRectangles());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(600, 100);
        frame.setVisible(true);
    }
}