import java.util.Set;
import java.util.TreeSet;
class Product implements Comparable {
String prodName;
int prodID;
Product(String str, int id) {
prodName = str;
prodID = id;
}
public int compareTo(Product p2) {
return prodName.compareToIgnoreCase(p2.prodName);
}
public boolean equals(Object p2) {
return prodName.compareToIgnoreCase(((Product) p2).prodName) == 0;
}
}
public class Main {
public static void main(String args[]) {
Set prodList = new TreeSet();
prodList.add(new Product("A", 1));
prodList.add(new Product("B", 0));
prodList.add(new Product("C", 2));
prodList.add(new Product("D", 4));
for (Product p : prodList)
System.out.printf("%-14s ID: %d\n", p.prodName, p.prodID);
}
}