CODEWITHSUNDEEP
javaarrayscollectionsarraylist
Geek
Geek

Reputation: 3329

adding elements from list to string array

I have a String array like,

 String[] abc= new String[]{};

and my List has some values. I iterate the list and add each list element to string array.

for(int i=0; i<errList.size(); i++)
            {
                abc[i] = errList.get(i).getSrceCd();
            }

errList.size() has 6 values. But when the for loops executed I get java.lang.ArrayIndexOutOfBoundsException. Any inputs?

Upvotes: 0

Views: 122

Answers (5)

bdkosher
bdkosher

Reputation: 5883

I would just do this

String[] abc= errList.toArray(new String[errList.size()]);

Upvotes: 0

Cratylus
Cratylus

Reputation: 54074

String[] abc = errList.toArray(new String[0]);

Or: 

String[] abc = new String[errList.size()];    
errList.toArray(abc);

Upvotes: 0

Adarsh
Adarsh

Reputation: 49

Did you try to use for each loop which is widely used in collection framework?

Upvotes: 0

Cat
Cat

Reputation: 67502

You're creating a String[] object of zero length; so, when you try to assign an item to abc[i], it is accessing an index not within your bounds 0 <= i < 0.

You should allocate abc with a length instead:

String[] abc= new String[errList.size()];
for(int i=0; i<errList.size(); i++)
{
    abc[i] = errList.get(i).getSrceCd();
}

Upvotes: 5

akostadinov
akostadinov

Reputation: 18584

You need to craete the string array with the same size as the list. It is not dynamic. Perhaps you can tell what you are trying to achieve with this exercise.

Upvotes: 0

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