WhiteBoard - lineTF.setLocation(20 100...

import javax.swing.*;
import java.awt.*;
import java.awt.event.*; i
public class WhiteBoard extends JFrame
implements ActionListener
{
private static int WIDTH = 550;
private static int HEIGHT = 350;
private int row = 10;
private int col = 20;
//GUI components
private JLabel headingL;
private JTextField lineTF;
private JTextArea whiteBoardTA;
private JButton exitB, appendB;
public WhiteBoard()
{
setTitle("White Board");
Container pane = getContentPane();
setSize(WIDTH,HEIGHT);
headingL = new JLabel("Welcome to White Board");
lineTF = new JTextField(20);
whiteBoardTA = new JTextArea(row,col);
exitB = new JButton("Exit");
exitB.addActionListener(this);
appendB = new JButton("Append");
appendB.addActionListener(this);
pane.setLayout(null);
headingL.setLocation(50, 20);