Java- Variables and default values

Class-level variables are implicitly initialized with default value.

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

Local variables should be initialized before accessing as they are not implicitly
assigned with default value.