Java提供操作鍵盤和滑鼠的API，在java.awt.*包中，官方API參見此處,下面是個簡單的例子：

    package com.yeetrack.robot;

    import javax.imageio.ImageIO;
    import java.awt.*;
    import java.awt.event.InputEvent;
    import java.awt.event.KeyEvent;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;

    /**
    * Created with IntelliJ IDEA.
    * User: victor
    * Date: 13-9-26
    * Time: 上午10:03
    */
    public class RobotTest
    {
        public static void main(String[] args) throws AWTException,         InterruptedException, IOException
        {

            Robot robot = new Robot();
            //設定Robot產生一個動作後的休眠時間,否則執行過快
            robot.setAutoDelay(1000);

           //獲取螢幕解析度
            Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
            System.out.println(d);
　　　　　　//以螢幕的尺寸建立個矩形
            Rectangle screenRect = new Rectangle(d);
            //截圖（擷取整個螢幕圖片）
            BufferedImage bufferedImage =       robot.createScreenCapture(screenRect);
            //儲存截圖
            File file = new File("screenRect.png");
            ImageIO.write(bufferedImage, "png", file);

            //移動滑鼠
            robot.mouseMove(500, 500);

            //點選滑鼠
            //滑鼠左鍵
            System.out.println("單擊");
            robot.mousePress(InputEvent.BUTTON1_MASK);
            robot.mouseRelease(InputEvent.BUTTON1_MASK);

            //滑鼠右鍵
            System.out.println("右擊");
            robot.mousePress(InputEvent.BUTTON3_MASK);
            robot.mouseRelease(InputEvent.BUTTON3_MASK);

            //按下ESC，退出右鍵狀態
            System.out.println("按下ESC");
            robot.keyPress(KeyEvent.VK_ESCAPE);
            robot.keyRelease(KeyEvent.VK_ESCAPE);
            //滾動滑鼠滾軸
            System.out.println("滾軸");
            robot.mouseWheel(5);

            //按下Alt+TAB鍵（切換桌面視窗）
            robot.keyPress(KeyEvent.VK_ALT);
            for(int i=1;i<=2;i++)
            {
                robot.keyPress(KeyEvent.VK_TAB);
                robot.keyRelease(KeyEvent.VK_TAB);
            }
            robot.keyRelease(KeyEvent.VK_ALT);

        }
    }

本文摘自於： 
 
http://www.yeetrack.com/?p=700