Convert an ArrayList to an object array

Asked 2010-04-30T14:47:48.113

Is there a command in java for conversion of an ArrayList into a object array. I know how to do this copying each object from the arrayList into the object array, but I was wondering if would it be done automatically.

I want something like this:

ArrayList<TypeA> a;

// Let's imagine "a" was filled with TypeA objects

TypeA[] array = MagicalCommand(a);

java arrays arraylist

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2 Answers

You can use this code

ArrayList<TypeA> a = new ArrayList<TypeA>();
Object[] o = a.toArray();

Then if you want that to get that object back into TypeA just check it with instanceOf method.

answered 2010-05-02T10:59:38.887

Yes. ArrayList has a toArray() method.

http://java.sun.com/javase/6/docs/api/java/util/ArrayList.html

answered 2010-04-30T14:50:29.763

Convert an ArrayList to an object array

2 Answers

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