Issue about ArrayList

[Babu Singh]

Hello,

please tell me why it doesnt enter in for loop when user stops inserting and just press enter i.e. null value.

 import java.util.ArrayList;
import java.util.Scanner;
import java.util.Collections;
 
public class ArraySorting {
 
    public static void main(String[] args) {
        //... Declare variables.
        Scanner           in    = new Scanner(System.in);
        ArrayList arraylist = new ArrayList (  ) ; 
        //... Read input one word at a time.
        System.out.println("Enter words.  End with EOF (CTRL-Z then Enter)");
        System.out.println("      or CTRL-C.");
 
        //... Read input one word at a time, adding it to an array list.
        while (in.hasNext()) {
            arraylist.add(in.next());
        }
        //... Sort the words.
        Collections.sort(arraylist);
       //To see the Elements of the arraylist 
       System.out.println ( "The elements of arraylist are " ) ; 
       for ( int i=0;i < arraylist.size (  ) ;i++ )  
       {  
       System.out.println ( " "+ ( i+1 ) +" )  "+arraylist.get ( i )  ) ; 
      }  
     System.out.println ( "The size of arraylist ="+arraylist.size (  )  ) ;   
     }
      }
   

[Sebastian Janisch]

Works for me:

 Enter words.  End with EOF (CTRL-Z then Enter)
      or CTRL-C.
Hello
World
The elements of arraylist are 
 1 )  Hello
 2 )  World
The size of arraylist =2

[Campbell Ritchie]

Because it expects an end-of-file character as a signal to stop.

[Maneesh Godbole]

Babu Ji wrote:

Please check your private messages for an important administrative matter