1. Write a class Compare3 that provides a static method largest. Method largest

Question

1. Write a class Compare3 that provides a static method largest. Method largest should take three Comparable parametersand return the largest of the three (so its return type will also be Comparable). Recall that method compareTo is part ofthe Comparable interface, so largest can use the compareTo method of its parameters to compare them.
2. Write a class Comparisons whose main method tests your largest method above.
•   First prompt the user for and read in three strings, use your largest method to find the largest of the three strings, andprint it out. (It’s easiest to put the call to largest directly in the call to println.) Note that since largest is a staticmethod, you will call it through its class name, e.g., Compare3.largest(val1, val2, val3).
•   Add code to also prompt the user for three integers and try to use your largest method to find the largest of the threeintegers. Does this work? If it does, it’s thanks to autoboxing, which is Java 1.5’s automatic conversion of ints toIntegers. You may have to use the -source 1.5 compiler option for this to work.

Explanation / Answer

Hi, Please find my implementation.

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import java.util.Scanner;

public class Comparisons {

   public static void main(String[] args) {

       Scanner sc = new Scanner(System.in);

       System.out.print("Enter three integes: ");

       int val1 = sc.nextInt();

       int val2 = sc.nextInt();

       int val3 = sc.nextInt();

       System.out.println("Largest: "+Compare3.largest(val1, val2, val3));

   }

}

class Compare3{

   public static Comparable largest( Comparable val1, Comparable val2, Comparable val3){

       // getting largest between val1 and val2

       Comparable largest = val1.compareTo(val2) > 0 ? val1 : val2;

       // getting largest between val1, val2, val3

       largest = largest.compareTo(val3) > 0 ? largest : val3;

       return largest;

   }

}

/*

Sample run:

Enter three integes: 89 23 90

Largest: 90

*/

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