Variables declared outside any method/constructor but inside
the class block, is a field variable.

Variables that are declared within a method or a specific
block of statements are local variables.

Local variables are kept alive as long as the execution is
within the block they're defined in. Once the block is
exited, the local variables can no more be used.

Field variables have longer life than local variables in
that they can live as long as the instance they belong to is
active.

field variable is the one which can have different access
local variable access restict to method only