This program demonstrates a user controlled for loop.

UserSquares.java

import java.util.Scanner;    // Needed for the Scanner class

/**
   This program demonstrates a user controlled for loop.
*/

public class UserSquares
{
   public static void main(String[] args)
   {
      int number;    // Loop control variable
      int maxValue;  // Maximum value to display
          
      System.out.println("I will display a table of " +
                         "numbers and their squares.");

      // Create a Scanner object for keyboard input.
      Scanner keyboard = new Scanner(System.in);
      
      // Get the maximum value to display.
      System.out.print("How high should I go? ");
      maxValue = keyboard.nextInt();

      // Display the table.
      System.out.println("Number   Number Squared");
      System.out.println("-----------------------");
      for (number = 1; number <= maxValue; number++)
      {
         System.out.println(number + "\t\t" + 
                            number * number);
      }
   }
}