The challenge here is to read lines of input until you reach EOF, then number and print all lines of content. Hint: Java's Scanner.hasNext() method is helpful for this problem. ###Input Format Read some unknown 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