Jpanel Gradient Color

 

Create java class

Example : jPanelgradient.java

 

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.GeneralPath;
import javax.swing.JPanel;

public class jPanelgradient extends JPanel {

    private Color BackgroundAtas = Color.RED;

    public Color getBackgroundAtas() {
        return BackgroundAtas;
    }

    public void setBackgroundAtas(Color BackgroundAtas) {
        this.BackgroundAtas = BackgroundAtas;
    }

    public Color getBackgroundBawah() {
        return BackgroundBawah;
    }

    public void setBackgroundBawah(Color BackgroundBawah) {
        this.BackgroundBawah = BackgroundBawah;
    }
    private Color BackgroundBawah = Color.BLACK;

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        Graphics2D g2 = (Graphics2D) g.create();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        GradientPaint paint = new GradientPaint(0, 0, BackgroundAtas, 0, getHeight(), BackgroundBawah);

        g2.setPaint(paint);
        g2.fillRect(0, 0, getWidth(), getHeight());

        int width = getWidth();
        int height = getHeight() * 0 / 100;

        Color light = new Color(1F, 1F, 1F, 0.5F);
        Color dark = new Color(1F, 1F, 1F, 0.0F);

        paint = new GradientPaint(0, 0, light, 0, height, dark);
        GeneralPath path = new GeneralPath();
        path.moveTo(0, 0);
        path.lineTo(0, height);
        path.curveTo(0, height, width / 2, height / 2, width, height);
        path.lineTo(width, 0);
        path.closePath();

        g2.setPaint(paint);
        g2.fill(path);

        paint = new GradientPaint(0, getHeight(), light, 0, getHeight() - height, dark);
        path = new GeneralPath();
        path.moveTo(0, getHeight());
        path.lineTo(0, getHeight() - height);
        path.curveTo(0, getHeight() - height, width / 2, getHeight() - height / 2, width, getHeight() - height);
        path.lineTo(width, getHeight());
        path.closePath();

        g2.setPaint(paint);
        g2.fill(path);
    }
}

Clean and Build

Right click java project, select clean and build

How to Use

 

• Create Jframe 
• Drag and drop jPanelgradient.java into jframe

 

Properties Option