import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class TextDemo extends Applet implements ActionListener{
 
	public void init()  {

		lab1 = new Label ("Please enter a number and then press ENTER");
		add(lab1);

		string1 = new TextField(10);
		add(string1);
		string1.addActionListener(this);
	
		string2 = new TextField(30);
		add(string2);
		string2.addActionListener(this);
	}
	public void actionPerformed(ActionEvent e) {
		if (e.getSource() == string1) {
			str = string1.getText();
			num = Integer.parseInt(str);					
			sqnum = num * num;
			//string2.setText(str);
			string2.setText("The square of the number is " + sqnum);
  		}	
	}

  String str;
	Label lab1;
	TextField string1, string2;
	int num, sqnum;
}