Java default values

There is a simple rule - when you define a member variable, it gets a default value. When you define local value, it do not get any default value - it has to be inicialized before the first use, or an compile-time exception will be thrown.

Default values for member variables:

Data Type	Default Value (for fields)
byte	0
short	0
int	0
long	0L
float	0.0f
double	0.0d
char	'\u0000'
Any object	null
boolean	false