Assign an arraylist to an array in java

Question

Is there anyway I could assign an arrayList to an array in Java?

Topera · Accepted Answer · 2010-09-18 02:19:53Z

11

Yes, use toArray() in List.

See:

  List a = new ArrayList();
  a.add("foo");
  a.add("bar");
  System.out.println(a); // prints [foo, bar]

  Object[] myArray = a.toArray();
  for (int i = 0; i < myArray.length; i++) {
   System.out.println(myArray[i]); // prints 'foo' and 'bar'
  }

See online, in ideone.

edited Sep 18, 2010 at 2:19

answered Sep 18, 2010 at 2:09

Topera

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Comments

jbindel · Accepted Answer · 2012-02-06 16:01:52Z

2

Object[] array = myArrayList.toArray(new Object[myArrayList.size()]);?

edited Feb 6, 2012 at 16:01

answered Sep 18, 2010 at 2:05

jbindel

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2 Comments

jbindel Over a year ago

They are different types, so you cannot simply do Object[] ar = myArrayList;

Patrick Over a year ago

Maybe you're trying to say Object[] array = myArrayList.toArray(new Object[myArrayList.size()]);?

卢声远 Shengyuan Lu · Accepted Answer · 2010-09-18 02:06:58Z

0

Call List.toArray()

answered Sep 18, 2010 at 2:06

卢声远 Shengyuan Lu

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