This code uses the Robot class to give you automatic keyboard and mouse control.

import java.awt.*;import java.awt.event.*;import java.io.IOException;import javax.swing.*;public class RobotDemo extends JFrame implements ActionListener{	//Store Keystrokes in an array                   static int keyInput[] = {KeyEvent.VK_R,KeyEvent.VK_O,                      KeyEvent.VK_B,KeyEvent.VK_O,KeyEvent.VK_T};	static JTextArea ta = new JTextArea();		static JButton bold = new JButton("Bold");	public RobotDemo()	{		getContentPane().add(ta,BorderLayout.CENTER);		 		JPanel p = new JPanel();		bold.addActionListener(this);		p.add(bold);		getContentPane().add(p,BorderLayout.SOUTH);	}	public static void main(String[] args) throws AWTException, IOException	{		RobotDemo rd = new RobotDemo();		rd.setLocation(100,100);		rd.setTitle("Robot Demo");		rd.setSize(200,200);		rd.show();		Robot robot = new Robot();		//This types the word 'robot' in the Textarea				for (int i = 0; i < keyInput.length; i++)		{			if(i > 0)		  	{		             robot.keyRelease(KeyEvent.VK_SHIFT);			}		        	robot.keyPress(keyInput[i]);			robot.delay(500);		}		//The following clicks the button 'Bold' to get the text bolder		robot.mouseMove(180,280);		robot.delay(2000);		robot.mousePress(InputEvent.BUTTON1_MASK);			//This delay keeps the button pressed for 2 seconds		robot.delay(2000);			robot.mouseRelease(InputEvent.BUTTON1_MASK);	}	public void actionPerformed(ActionEvent ae)	{		Font f = new Font("Times New Roman", Font.BOLD, 20);		ta.setFont(f);	}}