Java Implementation screen color

Code 1. Prints the screen color of the current mouse on the screen.

Import java.awt.*;

public class Pickcolor {

public static void Main (string[] args) {

Pickcolor pc = new Pickcolor ();

Color color = Pc.pickcolor ();

SYSTEM.OUT.PRINTLN ("color =" +color);

}

Public Color Pickcolor () {

Color pixel = new color (0,0,0);

Robot Robot = null;

Point Mousepoint;

int r,g,b;

Mouseinfo mouseinfo = new Mouseinfo ();

try {

Robot = new Robot ();

catch (Awtexception e) {

E.printstacktrace ();

System.exit (1);

}

Mousepoint = Mouseinfo.getpointerinfo (). GetLocation ();

Pixel = Robot.getpixelcolor (MOUSEPOINT.X,MOUSEPOINT.Y);

R = pixel.getred ();

G = Pixel.getgreen ();

return pixel;

}

}

Code 2. Using a GUI, output the screen color of the current mouse, and change the background colors of the GUI.

Create by Kin 2004/10/24 refer to Http://dev.csdn.net/article/44/44529.shtm

Import java.awt.*;

Import java.awt.event.*;

Import javax.swing.*;

Import javax.swing.event.*;

public class PickColor2 extends JFrame {

public static void Main (string[] args) {

PickColor2 pc = new PickColor2 ();

Color color = Pc.pickcolor ();

SYSTEM.OUT.PRINTLN ("color =" +color);

}

Public PickColor2 () {

Super ("Pick Color");

SetSize (200,200);

JPanel P =new JPanel ();

Getcontentpane (). Add (P);

This mouse listener it limited in the Java Desktop region

P.addmousemotionlistener (New Pickcolormouesmotionlistener (p));

This thread is really effected!

New Pickcolorthread (P). Start ();

SetVisible (TRUE);

}

/**mouse Motion Listener,when Mouse are moving, then set corresping screens color to the jpanels color. */

Class Pickcolormouesmotionlistener extends Mousemotionadapter {

Private JPanel p = null;

Pickcolormouesmotionlistener (JPanel p) {

THIS.P = p;

}

public void mousemoved (MouseEvent e) {

Color C = Pickcolor ();

This.p.setbackground (c);

System.out.println (c);

}

}

Class Pickcolorthread extends Thread {

Private JPanel p = null;

Pickcolorthread (JPanel p) {

This.p=p;

}

public void Run () {

while (true) {

try {

Thread.CurrentThread (). Sleep (10);

Color C = Pickcolor ();

This.p.setbackground (c);

Try change the foreground when background s R <= or G <= or B <= 50

Graphics g = p.getgraphics ();

if (c.getred () <=50 | | c.getgreen () <= | | c.getblue () <= 50) {

G.setcolor (Color.White);

} else {

G.setcolor (Color.Black);

}

g.DrawString (C.tostring (), 0,100);

g = null;

System.out.println (c);

catch (Interruptedexception e) {

E.printstacktrace ();

System.exit (1);

}

}

}

}

/**get Screen color*/

Public Color Pickcolor () {

Color pixel = new color (0,0,0);

Robot Robot = null;

Point Mousepoint;

int r,g,b;

Mouseinfo mouseinfo = new Mouseinfo ();

try {

Robot = new Robot ();

catch (Awtexception e) {

E.printstacktrace ();

System.exit (1);

}

Mousepoint = Mouseinfo.getpointerinfo (). GetLocation ();

Pixel = Robot.getpixelcolor (MOUSEPOINT.X,MOUSEPOINT.Y);

R = pixel.getred ();

G = Pixel.getgreen ();

return pixel;

}

}