class B<T extends A> {} class A {} --------------------------
class C<T extends I> {} interface I {} ----------------------- class D<T extends A & I> {} class E<T extends A & I, U extends A & I> {}
参考文献： Java Quick Syntax Reference by Mikael Olsson
Java 语法 索引 ----- 泛型(Generics),布布扣,bubuko.com
原文：http://www.cnblogs.com/timba/p/3900462.html