該操作時讓機器人模擬人手按快捷鍵來實現的

void clear() {

		   try {
				
				
					Robot r = new Robot();
					r.mousePress(InputEvent.BUTTON3_DOWN_MASK);		//按下滑鼠右鍵
					r.mouseRelease(InputEvent.BUTTON3_DOWN_MASK);	//釋放滑鼠右鍵
					r.keyPress(KeyEvent.VK_CONTROL);				//按下Ctrl鍵
					r.keyPress(KeyEvent.VK_R);						//按下R鍵
					r.keyRelease(KeyEvent.VK_R);					//釋放R鍵
					r.keyRelease(KeyEvent.VK_CONTROL);				//釋放Ctrl鍵
					r.delay(100);
				
	
		   }
		   catch (AWTException e) {
			   e.printStackTrace();
			 }

	}
 

然後import以下包： import java.io.*; import java.awt.Robot; import java.awt.AWTException; import java.awt.event.InputEvent; import java.awt.event.KeyEvent;