import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

/*
<applet code="Graph.class" width="200" height="100">
</applet>
 */

public class Graph2 extends JApplet implements ActionListener {
  int[] is = {};
  JTextField input;
  Color[] cs = {Color.RED, Color.BLUE};
  int scale = 15;

  @Override
  public void init() {
    input = new JTextField("", 16);
    input.addActionListener(this);
    setLayout(new FlowLayout());
    add(input);
  }  

  @Override
  public void paint(Graphics g) {
    super.paint(g);
    int i;
    int n = is.length;

    for (i=0; i<n; i++) {
      g.setColor(cs[i%2]);
      g.fillRect(0, i*scale+30, is[i]*scale, scale);
    }
  }

  public void actionPerformed(ActionEvent e) {
    String[] args = input.getText().split(" ");
    int n = args.length;
    is = new int[n];

    int i;
    for(i=0; i<n; i++) {
      is[i] = Integer.parseInt(args[i]);
    }
    repaint();
  }
}