Converting a Vector of Objects to array of Strings

Question

I'm trying to convert a Vector of Objects that have a toString() method using

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

or

(String[]) mObjectVector.toArray(new Object[mObjectVector.size()])

However, it gives me the following errors:

java.lang.ArrayStoreException: source[0] of type .../myObjectType; cannot be stored in destination array of type [Ljava/lang/String;

and

java.lang.ClassCastException: [Ljava.lang.Object;

What is wrong?

Reimeus · Accepted Answer · 2012-09-29 21:15:07Z

3

You cannot cast an object into the return type of that objects toString method. You have to build a new array by iterating over the Vector objects while calling toString.

String[] stringArray = new String[mObjectVector.size()];
for (int i=0; i < mObjectVector.size(); i++) {
   stringArray[i] = mObjectVector.get(i).toString();
}

edited Sep 29, 2012 at 21:15

answered Sep 29, 2012 at 21:06

Reimeus

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Comments

kosa · Accepted Answer · 2012-09-29 21:02:34Z

0

i guess you cant do toArray here because your vector has custom object.

you need to manually loop the vector and call toString() on object and set it to string array.

answered Sep 29, 2012 at 21:02

kosa

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