A DESCRIPTION OF THE REQUEST :
java.lang.Enum should have a static method values(Class<T>).
The signature of the method would be that:

public static <T extends Enum<T>> T[] values(Class<T> enumType);

JUSTIFICATION :
Every enum class has a static method valueOf(String) which the compiler generates in subclasses. The java.lang.Enum has the static method valueOf(Class<T>, String) which is a "companion" of the valueOf(String). The method valueOf(Class<T>, String) is very helpful in enum-based data structures.

However, the values() method doesn't have a "companion" in java.lang.Enum. This makes a defficiency when working in enum-based data structures which the method values(Class<T>) could easily supply.