Rational Numbers 

Uncommons Maths is a java library with nice math utilities and random number generators. This requires the library uncommons-maths-1.2.2.jar to be in classpath. The following example shows using Rational class.

File Name  :   com/bethecoder/tutorials/uncommons/RationalNumberTest.java  Author  :   Sudhakar KV Email  :   kvenkatasudhakar@gmail.com

package com.bethecoder.tutorials.uncommons; import org.uncommons.maths.number.Rational; public class RationalNumberTest {   /**    * @param args    */   public static void main(String[] args) {          Rational a = Rational.QUARTER;     Rational b = Rational.HALF;     Rational c = a.add(b);          System.out.println(a + "+" + b + " = " + c);               a = new Rational(1, 8);     b = new Rational(3, 8);     c = a.add(b);          System.out.println(a + "+" + b + " = " + c);          a = new Rational(4, 17);     b = new Rational(8, 13);     c = a.add(b);          System.out.println(a + "+" + b + " = " + c);   } }

1/4+1/2 = 3/4
1/8+3/8 = 1/2
4/17+8/13 = 188/221

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