Fill a array with List data

Question

How can I fill a array with the data provided by one List?

For example, I have a List with Strings:

List l = new ArrayList();
l.add(\"a         


        

Answer 1

You can use the toArray(T[] a) method:

String[] arr = list.toArray(new String[0]);

Or alternately:

String[] arr = list.toArray(new String[list.size()]);

The difference between the two is that the latter may not need to allocate a new array.

---

Effective Java 2nd Edition: Item 23: Don't use raw types in new code.

JLS 4.8 Raw Types

The use of raw types is allowed only as a concession to compatibility of legacy code. The use of raw types in code written after the introduction of genericity into the Java programming language is strongly discouraged. It is possible that future versions of the Java programming language will disallow the use of raw types.

---

Don't make a habit of naming an identifier l. It looks an awful lot like 1.