Java using regex split to put string into array

Question

I am trying to put a String into an array so I can print the tokens in a different order to how they are in the original file which I am reading from.

Below is the code I have so far, I have also included the input file I am reading from. What I would like to be able to do is print one word from the original file; system.out.println(tokens[4]); Which would print 'Species'

import java.util.Scanner;

public class inClassTest4Time {

  public static void main(String[] args) {

Scanner scan = new  
Scanner(inClassTest4Time.class.getResourcesAsStream("pet.txt"));
String line;
String[] tokens;
    while (scan.hasNextLine()) 
    {
        line = (scan.nextLine());
        tokens = line.split("//s");
        for (int i = 0; i < tokens.length; i++) {
            System.out.println(tokens[i]);

        }

    }


}
}

Input File:

Pet
===================
- species : String
+ isChipped : boolean
- name : String
- age : int
===================
+ Pet ( String name )
===================

David says Reinstate Monica · Accepted Answer · 2015-02-05 19:27:39Z

2

I think you meant to put \\s instead of //s. //s is actually splitting based on the literal string //s (ie no escaping). Since none of your strings have that, there is no split. I suspect that if you do tokens[2] you will get - species : String.

edited Feb 5, 2015 at 19:27

answered Feb 5, 2015 at 18:28

David says Reinstate Monica

20.2k22 gold badges84 silver badges124 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

TheHadimo Over a year ago

Ive changed it, i get the below output if i put system.out.println(tokens[4]); I get this output: Pet Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4 at InClassTest4.inClassTest4Time.main(inClassTest4Time.java:19) Java Result: 1

Maarten Bodewes Over a year ago

Yes, that's because in Java arrays are zero based, so for four tokens you would get token index 0, 1, 2 and 3.

Collectives™ on Stack Overflow

Java using regex split to put string into array

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related