java - Multiple Level of Inheritance -

i have following java class multiple level of inheritance type parameters. want use type parameter t in class b.

class b extends c { } class c<t extends d> { } class d { } 

however, following doesn't compile:

class b extends c {     t t; } class c<t extends d> { } class d { } 

although can define variable t in class c, not coding practice. how can define following (this doesn't compile well)?

class b extends c<t extends d> { } 

thanks!

type parameters not inherited!

if want have class b generic, should specify own type parameter:

class b<t extends d> extends c<t> {     t t;     ... } 

note must again constrain type parameter t have extending d because constrained way in class c.