import java.util.*;
/**
 * Class Mark6 implement the Mark Six lottery game 
 * Constructor Mark6 picks 7 numbers out of 1 to 47
 * toString() returns a string of the result
 *
 * @author Terence
 * @version 1.0
 */
public class Mark6 {

    private int[] a; // array of seven numbers

    /**
     * picks 7 numbers out of 1 to 47
     */
    public Mark6() {

      a = new int[7]; 

      a[0] = (int) (Math.random() * 47) + 1;

      for (int num = 1;num < a.length; num++) {
        boolean repeatFlag = true;
        while (repeatFlag) {
          a[num] = (int) (Math.random() * 47) + 1;
          for (int i = 0; i < num; i++) {
           if (a[i] == a[num]) {
              repeatFlag = true;
              break;
           } else repeatFlag = false;
          }
        } 
      }
 
      Arrays.sort(a,0,a.length-1); // sort number 1 to 6
    }

    /**
     * toString() returns a string of the result
     * @return String of the seven numbers seperate by ,
     */
    public String toString() {
      String Str="";
      for (int i = 0; i < a.length - 1; i++) 
          Str += a[i] + ",";
      return (Str + a[a.length-1]);
    }
}

/*
 * Class Mark6App
 * @see Mark6
 * @author Terence
 * @version 1.0
 */
public class Mark6App {
  public static void main(String[] args) {

    Mark6 mark6 = new Mark6();

    System.out.print("the numbers are: " + mark6.toString());
  }
}

import java.awt.*;
import java.applet.*;
import java.util.*;
/*
 * Class Mark6BallApplet
 * @see Mark6
 * @author Terence
 * @version 1.0
 */
public class Mark6BallApplet extends Applet {

  Mark6 mark6;

  public void init( ) {
	mark6 = new Mark6();    
  }

  public void paint(Graphics g)
  {
    StringTokenizer  st = 
       new  StringTokenizer(mark6.toString(),",");

    int  i = 1;
    while (st.hasMoreTokens())  {
      g.setColor(Color.red);
      g.fillOval(30 + (i - 1) * 50 , 30, 30, 30);
      g.setColor(Color.green);
      g.drawString(st.nextToken(),40+(i-1)*50,50);
      ++i;
    }
  }
}