Question

I have this piece of code below. How do I initialize each element = false?

boolean[] seats = new boolean[10]

I saw a similar question. But, the second line didnt make sense to me (Can you explain the 2nd line?).

 Boolean[] array = new Boolean[size];
 Arrays.fill(array, Boolean.FALSE);

Answer 1

The default value for the elements in a boolean[] is false. You don’t need to do anything.

The reason it’s necessary for Boolean[] is because the default value is null.

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To initialize to true, use the overload of Arrays.fill that accepts a boolean[].

boolean[] seats = new boolean[10];
Arrays.fill(seats, true);

See it working online: ideone