The
toArray() method of
CopyOnWriteArrayList is used to return an array containing all the elements in CopyOnWriteArrayList in the correct order.
Syntax:
public Object[] toArray()
or
public <T> T[] toArray(T[] a)
Parameters: This method either accepts no parameters or it takes an array
T[] a as parameter which is the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose.
Return Value: The function returns
an array containing all the elements in this list.
Exception: The first overload of this method throws no exceptions. However, the second overload throws following exceptions:
- ArrayStoreException: if the runtime type of the specified array is not a supertype of the runtime type of every element in this list.
- NullPointerException if the specified array is null
Below programs illustrate the CopyOnWriteArrayList.toArray() method:
Program 1:
Output:
CopyOnWriteArrayList: [32, 67, 98, 100]
Elements of CopyOnWriteArrayList as Array: [32, 67, 98, 100]
Program 2:
