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Java End-of-file

  • rcgonzalezf + 1 comment

    Your for loop can be simplified:

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

    You don't have to use the == operator to compare with true since the hasNext method returns a boolean.

    • synhack + 4 comments

      In fact, you can shorten it even further (at a potential loss of readability) by including the print statement within the for loop:

      for(int i = 1; scan.hasNext(); System.out.println(i + " " + scan.nextLine()), i++);
      • JChiquin + 7 comments

        Even shorter: 

        for(int i=1; scan.hasNext() ; System.out.println(i++ +" "+scan.nextLine()));
        • adarsh98 + 0 comments

          Good idea!

        • [deleted] + 0 comments

          That's pretty sweet! Thanks.

        • stelabr2 + 0 comments

          That's not very readable code! A while loop is more appropriate.

        • tasfiahm + 0 comments

          Thanks for a different a view.

        • praseedakannuz11 + 0 comments
          [deleted]
        • quannv + 0 comments

          Oh...thats great idea =))

        • pandeyvirat12345 + 0 comments

          what scan.hasNext do?

      • Surya07081995 + 0 comments
        //shortest
for(int i=1;in.hasNext() ;out.println(i++ +" "+in.nextLine()) );
      • nimish_gupta + 2 comments

        what does Scan.hasNext() exactly means??
        And while in the for loop we are not comparing Scan.hasNext() ??

        • JeanDuarte + 0 comments

          U shall read Scan.hasNext like this.... does "Scan" have next element ? If it has, it returns TRUE, so while something is TRUE, keep it going. That's why you don't need any comparing.

        • Surya07081995 + 0 comments

          sorry for being late,scan.hasNext() means after getting one input sacanner will wait for the next input .

      • tasfiahm + 0 comments

        Thanks a lot for sharing your knowledge..