What are instance and local variables?

• Instance variable or class variables are the same thing are created inside a class and outside the method and can be accessed by everymethod

• Whereas local variables are created inside a block such as, inside method or constructor and they can be only accessed inside that block

What are the default values assigned to variables and instance in java ?

• For instance the default values are assigned by the default constructor

• For int -> 0

• For boolean -> false

• For ref -> null

• char: ‘\u0000’ (null character

• String is assigned as null in case of instance variable

• A compiler will never assign a default value to local variable

• A compiler will assign the default values only for the instance variable

Example