Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 17.2, Problem 17.6CP

Explanation of Solution

Passing reference type to type parameter of a class:

Yes”, only reference type can be passed to the type parameter of a class.

Explanation:

  • Reference type can be passed to the type parameter when creating the instances of a class.
  • By default, Java provides Object as type argument on creating the instance of a generic class.

Example:

// Create generic class exam with type parameter T

public class exam<T>

{   

    //Declare the variable with type parameter T

    private T to;

    private T ra;

    //Define the generic class constructor

    public exam(T tot, T rank)

    {   

           //Assigning values for variable

        to= tot;

        ra=rank;

    }

    //Define the main method

    public static void main (String[] args)

    {

        //Create the Integer object

        Integer rank= new Integer(2);

        //Create Double object

        Double tot= new Double(466...

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Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)

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