Immutable array in Java

Question

Is there an immutable alternative to the primitive arrays in Java? Making a primitive array final doesn’t actually prevent one from doing something like

final int[] array = new int[] {0, 1, 2, 3};
array[0] = 42;

I want the elements of the array to be unchangeable.

Answer

Not with primitive arrays. You’ll need to use a List or some other data structure:

List<Integer> items = Collections.unmodifiableList(Arrays.asList(0,1,2,3));

Accepted Answer

Not with primitive arrays. You&#8217;ll need to use a List or some other data structure:List<Integer> items = Collections.unmodifiableList(Arrays.asList(0,1,2,3));

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Answer