default values for primitives

Question

In Java, what would a variable of type int hold if it was not initialized (I know that it will not let me compile if I used x directly before initi

Answer 1

for int x the default value would be 0

For primitive types please refer to this link

and for int[] x would be null

Answer 2

Instance variables will be defaulted to a 'reasonable' value. Local variables will contain garbage.

Read up on the topic here.

Answer 3

x in "int x" is automatically initialized as 0; x in "int [] x" is automatically initialized as null, since x is actually a reference

but compiler will prompt to initialize the variable:

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
    The local variable a may not have been initialized
    The local variable a may not have been initialized

    at initialization.main(initialization.java:6)