java - How could I change generic class parameter that has been specified at super class from subclass? -

java - How could I change generic class parameter that has been specified at super class from subclass? -

public class class2 extends class1<a, b>{} public class class3 extends class2{}

in class3, wanna alter b c, possible ? thanks!

public class class2<b> extends class1<a, b>{} public class class3<c> extends class2<c>{}

thats 1 way, again.. improve extend class3 class1 , alter it.

public class class2 extends class1<a, b>{} public class class3 extends class1<a, c>{}

java generics subclass