Question

Pleas code in Java Write a generic class named PairImpl that implements the interface below.write a program that creates list of 3 pairs where each pair represents the name of a fruit and the quantity.    Once the list is populated three pairs of fruits and quantities, it then prints each pair shown in the sample run using a for loop.

Answer 1

The Java code follows:

///////////////////////////// PairImpl.java ///////////////////////////
class PairImpl {
    String fruit;
    int qty;
    
    public PairImpl (String f, int q) {
        fruit = f;
        qty = q;
    }
}


/////////////////////////////////// Main.java /////////////////////////////////////
import java.util.*;

public class Main
{
        public static void main(String[] args) {
        ArrayList<PairImpl> p = new ArrayList<>();
        
        p.add (new PairImpl ("Orange", 42));
        p.add (new PairImpl ("Apple", 36));
        p.add (new PairImpl ("Lemon", 99));
        
        for (int i = 0; i < p.size(); i++) {
            System.out.printf ("Fruit: %s \tquantity: %d\n", p.get(i).fruit, p.get(i).qty);
        }
        
        }
}