Hackerrank Java End-of-file Solution

Hackerrank Java End-of-file Solution

import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int i=0;
        while(scan.hasNextLine()){
        String str=scan.nextLine();
            if (str.contains("end-of-file")){
                i++;
                System.out.println(i+" "+str);
                break;
            }else{
                i++;
                System.out.println(i+" " +str);       
            }
        }  
//         I don't know why hackerrank didn't accept my below solution. when I run it in eclipse it worked as well as it is required. anyway  it is the 2. solution.
//          Scanner scan = new Scanner(System.in);
//         int i = 0;
//         while(true){
//         String str=scan.nextLine();
//             if (str.contains("end-of-file")){
//                 i++;
//                 System.out.println(i+" "+str);
//                 break;
//             }else{
//                 i++;
//                 System.out.println(i+" " +str);

                
//             }

//         }
        
    }
}

import java.io.;
import java.util.;
import java.text.;
import java.math.;
import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
    **String str;**
    Scanner input = new Scanner(System.in);
    int i=0;
    while(input.hasNextLine()){
     str=input.nextLine();
        if (str.contains("end-of-file")){
            i++;
            System.out.println(i+" "+str);
            break;
        }else{
            i++;
            System.out.println(i+" " +str);       
        }}
   
}

}

Here is the solution same as you. I guess the str variable should introduct after main not when you get it from user

public class Solution {

public static void main(String[] args) {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
    
    Scanner scan = new Scanner(System.in);

    int i=1;
    while(scan.hasNextLine()){
    String s=scan.nextLine();
    System.out.println(i+" " +s);
        i++; 
    }
}

}