Split a field through array in java

Question

I would like to know how to split a field through array using Java. For example we have GLaccount like AAAA-BBBB-CCCC and we would like to split each component and store it in an variable however the GLaccount may have AAAA-BBBB (no third component) so in this case variable segment3 throws NULL POINTER exception so I am not sure on how to fix this since I am new to Java.

String GL = getOwner().getGL("GLACCT");
String segment1 = GL.split("-")[0];
String segment2 = GL.split("-")[1];
String segment3 = GL.split("-")[2];

If you get a nullpointer as you say, then there is something else wrong, you should get an index out of bounds exception, check that getGL is not null. — Viktor Mellgren
– Viktor Mellgren, Commented Oct 17, 2018 at 20:38

DhaRmvEEr siNgh · Accepted Answer · 2018-10-17 15:50:11Z

1

Using split("-" ) will give you an array of strings. before using array value, you can check the size of array that if it contains enough elements to use..

String GL = getOwner().getGL("GLACCT"); 
String[] array=GL.split("-");
String segment1 = array[0]; 
String segment2 = array[1]; 

//check if array have 3rd element 
if(array.length >2)
      String segment3 = array[2];
else
       System.out.println("No third element") ;

edited Oct 17, 2018 at 15:50

answered Oct 17, 2018 at 15:38

DhaRmvEEr siNgh

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Sébastien Helbert · Accepted Answer · 2018-10-17 16:53:51Z

0

Use split method (once) and check returned array length :

 String[] values3 = "AAAA-BBBB-CCCC".split("-");
 // values.length == 3 


 String[] values2 = "AAAA-BBBB".split("-");
 // values2.length == 2

answered Oct 17, 2018 at 16:53

Sébastien Helbert

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mommcilo · Accepted Answer · 2018-10-19 08:06:06Z

0

import java.util.Arrays;    
List<String> list = Arrays.asList(GL.split("-"));

With this code you do not need to think if you have 2,3 or 10 strings, and to add new if for every new one.

edited Oct 19, 2018 at 8:06

answered Oct 17, 2018 at 16:32

mommcilo

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1 Comment

void Over a year ago

Add some description to your code, code only answeres are mostly not acceptable

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