Empty arrays automatically initialize contents?

Question

How come

int alone;
System.out.println(alone);

Gives errors but

 int[] arr = new int[1];
 System.out.println(arr[0]);
         


        

Answer 1

Yes, for primitive types(except boolean and char) it will be default to ZERO. If object type it will be default to null.

This java tutorial may help you.

NOTE: as woot4Moo answered, this is for only instance variables. If local variable, then it won't be default to any.