Apaxiaaaaaaaaaaaans! Kattis Problem Solution In Java

//Nayeem Shahriar Joy,Applied Physics & Electronic Engineering, University of Rajshahi.
 

import java.util.HashSet;

import java.util.Scanner;

import java.util.Set;

import javax.swing.text.html.HTMLDocument.Iterator;

public class Joy{

public static void main(String[] args) {

Scanner io = new Scanner(System.in);

String s=io.nextLine();

int i;

for( i=0;i<s.length()-1;i++)

{

if(s.charAt(i)!=s.charAt(i+1))

{

System.out.print(s.charAt(i));

}

}

System.out.print(s.charAt(i));

System.out.println();

}

}