Convert FastSet to Array of String

Question

I have a set: Set<String> tmpSet = FastSet.newInstance();

When i follow this question: How to convert Set to String[]?

and i do the same: String[] strArrStrings = includeFeatureIds.toArray(new String[0]);

and i have this exception:

Exception: java.lang.IllegalArgumentException
Message: Error running script at location [component://order/webapp/ordermgr/WEB-INF/actions/entry/catalog/KeywordSearch.groovy]: java.lang.UnsupportedOperationException: Destination array too small
---- cause ---------------------------------------------------------------------
Exception: java.lang.UnsupportedOperationException
Message: Destination array too small
---- stack trace ---------------------------------------------------------------
java.lang.UnsupportedOperationException: Destination array too small
javolution.util.FastCollection.toArray(FastCollection.java:351)

So now, i have to code as:

for (FastSet.Record r = tmpSet.head(), end = tmpSet.tail(); (r = r.getNext()) != end;) {
         // copy one by one element to String[]  
     }

My question: Is there anyway(or utility) to convert FastSet to String[]?

Thank :-)

See also:

FastSet

No problem. Since you have correct answer now I will remove my comment. — Pshemo, Oct 07 '13 at 03:30

score 2 · Accepted Answer · edited Oct 07 '13 at 03:29

2

See FastCollection#toArray(T[])

Unlike standard Collection, this method does not try to resize the array

so you have to make the array the right size. Use

includeFeatureIds.toArray(new String[includeFeatureIds.size()])

instead of

includeFeatureIds.toArray(new String[0])

edited Oct 07 '13 at 03:29

Pshemo

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answered Oct 07 '13 at 03:23

vandale

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Thank for your answer and info inside it, i will mark as answer in 5 minutes :-) – Rong Nguyen Oct 07 '13 at 03:28

Convert FastSet to Array of String

1 Answers1