Chapter 18, Problem 2PE

Program Plan Intro

Pair class – Swap

Program plan:

Pair.java:

• Define the generic class named “Pair”.
  • Create the instance variables “first”, and “second”.
  • Define the constructor and assign the values.
  • Get and return the first element.
  • Get and return the second element.

PairTester.java:

• Define the “PairTester” class.
  • Define the function “swap ()” to swap the elements.
    • Swap the elements using “temp” variable.
    • Print the values after swapping.
  • Define the “main” method.
    • Pass two values to the constructor.
    • Get the first and second values using “getFirst()”, and “getSecond()” methods.
    • Print the values before swapping.
    • Call the function “swap ()”.