//RandomPoints.java

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

public class RandomPoints extends JApplet {     

    int rows, cols, percent;

    public void init() {

	String input;
	input = JOptionPane.showInputDialog("Enter # rows");
	rows = Integer.parseInt(input);
	input = JOptionPane.showInputDialog("Enter # columns");
	cols = Integer.parseInt(input);
	input = JOptionPane.showInputDialog("Percentage filled");
	percent = Integer.parseInt(input);

	JTextArea textarea = new JTextArea(rows,cols); 
	textarea.setLineWrap( true );
	textarea.setFont( new Font("Courier",Font.BOLD,18) );

	for (int i=1; i<=rows; i++) {
	    for (int j=1; j<=cols; j++)
		if (Math.random()<percent/100.0)
		    textarea.append ("*");
		else
		    textarea.append (" ");
	    textarea.append ("\n");
	}

	JScrollPane scrollpane = new JScrollPane(textarea);

	JOptionPane.showMessageDialog(null, 
				      scrollpane,
				      "Random points of light",
				      JOptionPane.PLAIN_MESSAGE);
    }

    public void paint (Graphics g) {
	//g.setColor(Color.RED);
	for (int i=1; i<=getWidth(); i++)
	    for (int j=1; j<=getHeight(); j++)
		if (Math.random()<percent/100.0)
		    g.drawLine(i,j,i,j);
    }
}