// Simple while loop example

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

public class Loop1 extends Applet implements ActionListener
{	
    Label title = new Label("Loop Example");

   // Input panel.
   Panel inputP = new Panel(new GridLayout(1, 2));
   Label inputL = new Label("Enter termination value:");
   TextField input = new TextField(15);
   
   Button enter = new Button("Enter");

   public void init()
   {
      setLayout(new GridLayout(3, 1));

      add(title);

      add(inputP);
      inputP.add(inputL);
      inputP.add(input);

      add(enter);
      enter.addActionListener(this);
      setSize(275,100);
   }

    // actionPerformed handles button presses.  It is executed whenever
    // the enter button is pressed.
   public void actionPerformed(ActionEvent e)
   {
      int inputI;

      // Read the input integer.
      inputI = Integer.parseInt(input.getText());

      // Print a count from 0 to inputI
      int count = 0;
      
      while (count <= inputI)
      {
         System.out.println(count);
	 count++;
      }
   }
}