Chapter 18, Problem 6PC

Program Plan Intro

Generic class

Program plan:

• Import the required package.
• Create the class “MyList” with a type parameter “T” that accepts any type that implements “Comparable” interface.
  • Create “ArrayList” as a field of class “MyList” with type parameter “T”.
  • Define the constructor.
  • Define the public method “add()” to accept the parameter of type “T”,
    • Store the value in “ArrayList” using the reference variable “list”.
  • Define the method “largest()”,
    • Call the method “get()” to store the initial value of “ArrayList” in the variable “val”.
    • Iterate the elements of “ArrayList” using “for” loop.
    • Use standard method “compareTo()” for standard comparison to find largest value..
    • Return the largest value using the keyword “return”.
  • Define the method “smallest()”,
    • Call the method “get()” to store the initial value of “ArrayList” in the variable “val”.
    • Iterate using “for” loop to find the smallest value in the “ArrayList”.
    • Use standard method “compareTo()” for standard comparison to find smallest value.
    • Return the smallest value using the keyword “return”.
• Create the class “Main”,
  • Define the method “main()”,
    • Create the object of a class “MyList” as a type of “Integer”.
    • Call the “add()” method using the object of type “Integer” to fill the values in the “ArrayList” of “Integer”.
    • Call the method “largest()” to print the largest value of Integer “ArrayList”.
    • Call the method “smallest()” to print the smallest value of Integer “ArrayList”.