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Is there a way to use the toArray() method on an ArrayList<CustomObject>?

From what I see, it can only be used with Object

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There is ArrayList<T>.toArray()... – Oli Charlesworth Nov 16 '11 at 0:58
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3 Answers

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You need to pass in an array of CustomObject in order to get one back. The parameter-free ArrayList.toArray() call returns an Object[], but the parameterized version T[] ArrayList<T>.toArray(T[]) returns what you expect. If you size the array you pass as a parameter correctly then the call will use the array you pass rather than allocate another one, e.g.

ArrayList<CustomObject> foo;
//...
CustomObject[] bar = foo.toArray(new CustomObject[foo.size()]);
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up vote 0 down vote

Use:

CustomObject[] customObjects = myList.toArray(new CustomObject[myList.size()])
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CustomObj[] customArray = new CustomObj[size];

customArray = (CustomObj[])ArrayListObj.toArray(customArray);

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