How to Find Duplicate String in Java
Since we all known HashSet is a part of Collection that will store unique value always > if we are trying to add any duplicate value add method return false. > add Method check existing Object Hashcode and compare with newly added Object if hashCode match then add method Return False else Return True . >here we created HashSet<String> Object with generic type data type >since we Added <String> After HashSet then it only allows to add String value >generic type is only use to overcome data type casting problem .. Please Check below programmer /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package javainterview; import java.util.*; /** * * @author shiboo */ public class Duplicate { public static void main(String[] args) { String [] arr= {"Anand","