Chapter 13, Problem 13.15PE

Program Plan Intro

BigInteger.Java

Program Plan:

• Include a class name named “Exercise_13_15”.
  • Declare package.
  • Declare main method.
  • Declare variables to create and initialize two rational numbers “r1” and “r2” using BigInteger() method.
  • Print addition of two rational numbers.
  • Print subtraction of two rational numbers.
  • Print multiply of two rational numbers.
  • Print division of two rational numbers.
  • Print double value of rational number.
  • Close the main method.
• Close the class.
• Include a class name named “Rational”.
  • Declare package.
  • Declare main method.
  • Create Data fields for numerator and denominator.
  • Create a rational constructor with default properties.
  • Create a rational constructor and assign numerator and denominator.
    • Declare variable gcd.
    • Compare the denominator with 0 and use of ternary operator.
  • Define a method to find GCD of two numbers.
    • Declare variable n1 and n2.
    • Compare n1 and n2 using the comapreTo() method.
    • return the gcd of n1 and n2.
  • Define a method to return numerator.
  • Define a method to return denominator.
  • Define a method to add a rational number to this rational.
    • Add rational number.
  • Declare a method to subtract a rational number from this rational.
  • Declare a method to multiply a rational number by this rational.
  • Declare a method to divide a rational number by this rational.
  • Declare an override method to implement the abstract intValue() method in Number.
  • Declare an override method to implement the abstract floatValue() method in Number.
  • Declare an override method to implement the doubleValue() method in number.
  • Declare an override method to implement the abstract longValue() method in number.
  • Declare an override method to implement the compareTo method in Comparable
  • Close the main method.
• Close the class.