public Drawer() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	//To fix the problem, put up here:
	/[color=green]/JTextArea txtrCurrentXCoordinate;[/color] // third thing I did, first thing I did to fix my mistake.
	private void initialize() {
		frame = new JFrame();
		frame.setBounds(100, 100, 450, 300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
/*Second problem factor*/		[color=red]txtrCurrentXCoordinate.setText("Previous x coordinate");[/color] // second thing I did.
		//[color=red]RED FLAG[/color] error message : txtrCurrentXCoordinate cannot be resolved.
		
		
/*First problem factor*/[color=orangered]JTextArea[/color] txtrCurrentXCoordinate = new JTextArea(); //first thing I did
		/[color=green]/txtrCurrentXCoordinate = new JTextArea()[/color];//fourth thing I did and the second I did to fix my mistake.
		txtrCurrentXCoordinate.setText("Current x coordinate");
		txtrCurrentXCoordinate.setBounds(69, 175, 160, 36);
		frame.getContentPane().add(txtrCurrentXCoordinate);
	}
}

import java.awt.EventQueue;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;


import javax.swing.JFrame;
import javax.swing.JTextArea;

public class Drawer {

	private JFrame frame;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Drawer window = new Drawer();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public Drawer() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */

	JTextArea txtrCurrentXCoordinate; 
	private void initialize() {
		frame = new JFrame();
		frame.setBounds(100, 100, 450, 300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		txtrCurrentXCoordinate.setText("Previous x coordinate"); // second thing I did.


		txtrCurrentXCoordinate = new JTextArea();
		txtrCurrentXCoordinate.setText("Current x coordinate");
		txtrCurrentXCoordinate.setBounds(69, 175, 160, 36);
		frame.getContentPane().add(txtrCurrentXCoordinate);
	}// end initialize

	public class CommandData {
		private int cmdScheduleID;
		public int getCmdScheduleID() {
			return cmdScheduleID;
		}

	}
}