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Java End-of-file

Java End-of-file

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“In computing, End Of File (commonly abbreviated EOF) is a condition in a computer operating system where no more data can be read from a data source.” — (Wikipedia: End-of-file)

The challenge here is to read n lines of input until you reach EOF, then number and print all n lines of content.

Hint: Java’s Scanner.hasNext() method is helpful for this problem.

Input Format

Read some unknown n lines of input from stdin(System.in) until you reach EOF; each line of input contains a non-empty String.

Output Format

For each line, print the line number, followed by a single space, and then the line content received as input.

Sample Input

Hello world
I am a file
Read me until end-of-file.

Sample Output

1 Hello world
2 I am a file
3 Read me until end-of-file.

Solution:

import java.util.*;


public class Solution {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);        
        int i = 1;
        while(scan.hasNext()){
            String txtString = scan.nextLine();
            System.out.println(i+" "+txtString);
            i++;
        }
        scan.close();
    }
}