INTRODUCTION TO COMPUTER SCIENCE
Robert Sedgewick and Kevin Wayne


This is the syntax highlighted version of LeapYear.java.


/*************************************************************************
 *  Compilation:  javac LeapYear.java
 *  Execution:    java LeapYear N
 *  
 *  Prints true if N corresponds to a leap year, and false otherwise.
 *
 *  % java LeapYear 2004
 *  true
 *
 *  % java LeapYear 1900
 *  false
 *
 *  % java LeapYear 2000
 *  true
 *
 *************************************************************************/

public class LeapYear { 
   public static void main(String[] args) { 
      int year = Integer.parseInt(args[0]);
      boolean isLeapYear;

      // divisible by 4
      isLeapYear = (year % 4 == 0);

      // divisible by 4 and not 100
      isLeapYear = isLeapYear && (year % 100 != 0);

      // divisible by 4 and not 100 unless divisible by 400
      isLeapYear = isLeapYear || (year % 400 == 0);

      System.out.println(isLeapYear);
   }
}


Last updated: Wed Feb 11 18:07:23 EST 2004 .
Copyright © 2004, Robert Sedgewick and Kevin Wayne.