Color class is used to work with colors in Java 2D

         

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

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

public class Colors extends JPanel {

  public void paintComponent(Graphics g) {
    super.paintComponent(g);

    Graphics2D g2d = (Graphics2D) g;

    g2d.setColor(new Color(12, 16, 116));
    g2d.fillRect(10, 15, 90, 60);

    g2d.setColor(new Color(42, 19, 31));
    g2d.fillRect(130, 15, 90, 60);

    g2d.setColor(new Color(70, 7, 23));
    g2d.fillRect(250, 15, 90, 60);

    g2d.setColor(new Color(10, 10, 84));
    g2d.fillRect(10, 105, 90, 60);

    g2d.setColor(new Color(22, 21, 61));
    g2d.fillRect(130, 105, 90, 60);

    g2d.setColor(new Color(21, 98, 69));
    g2d.fillRect(250, 105, 90, 60);

    g2d.setColor(new Color(217, 146, 54));
    g2d.fillRect(10, 195, 90, 60);

    g2d.setColor(new Color(63, 121, 186));
    g2d.fillRect(130, 195, 90, 60);

    g2d.setColor(new Color(131, 121, 11));
    g2d.fillRect(250, 195, 90, 60);

  }

  public static void main(String[] args) {

    JFrame frame = new JFrame("Colors");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new Colors());
    frame.setSize(360, 300);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  }
}

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33.	Performs a somewhat subjective analysis of a color to determine how dark it looks to a user
34.	Lightens a color by a given amount
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Color class is used to work with colors in Java 2D : Color « 2D Graphics GUI « Java

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