Java Swing Tutorial - Java GradientPaint(Point2D pt1, Color color1, Point2D pt2, Color color2, boolean cyclic) Constructor

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Syntax

GradientPaint(Point2D pt1, Color color1, Point2D pt2, Color color2, boolean cyclic) constructor from GradientPaint has the following syntax.

@ConstructorProperties(value ={"point1","color1","point2","color2","cyclic"})public GradientPaint(Point2D pt1,           Color color1,           Point2D pt2,           Color color2,          boolean cyclic)

Example

In the following code shows how to use GradientPaint.GradientPaint(Point2D pt1, Color color1, Point2D pt2, Color color2, boolean cyclic) constructor.

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
//  w w  w.  j  a v  a2 s .  com
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main extends JPanel {

  public Main() {
  }

  public void paint(Graphics g) {
    Graphics2D g2D = (Graphics2D) g;

    Point2D.Float p1 = new Point2D.Float(150.f, 75.f);
    Point2D.Float p2 = new Point2D.Float(250.f, 75.f);
    float width = 300;
    float height = 50;
    GradientPaint g1 = new GradientPaint(p1, Color.WHITE, p2, Color.DARK_GRAY,
        true);
    Rectangle2D.Float rect1 = new Rectangle2D.Float(p1.x - 100, p1.y - 25,
        width, height);
    g2D.setPaint(g1);
    g2D.fill(rect1);
    g2D.setPaint(Color.BLACK);
    g2D.draw(rect1);
    g2D.draw(new Line2D.Float(p1, p2));
    g2D.drawString("Cyclic Gradient Paint", p1.x - 100, p1.y - 50);
    g2D.drawString("p1", p1.x - 20, p1.y);
    g2D.drawString("p2", p2.x + 10, p2.y);

    p1.setLocation(150, 200);
    p2.setLocation(250, 200);
    GradientPaint g2 = new GradientPaint(p1, Color.WHITE, p2, Color.DARK_GRAY,
        false);
    rect1.setRect(p1.x - 100, p1.y - 25, width, height);
    g2D.setPaint(g2);
    g2D.fill(rect1);
    g2D.setPaint(Color.BLACK);
    g2D.draw(rect1);
    g2D.draw(new Line2D.Float(p1, p2));
    g2D.drawString("Acyclic Gradient Paint", p1.x - 100, p1.y - 50);
    g2D.drawString("p1", p1.x - 20, p1.y);
    g2D.drawString("p2", p2.x + 10, p2.y);
  }

  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.getContentPane().add(new Main());

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 200);
    frame.setVisible(true);
  }
}

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