Description Jon Nall 2005-02-28 10:23:06 EST

The following code compiles in eclipse with a WARNING:
Type safety: The expression of type EnumSet needs unchecked conversion to
conform to EnumSet<Enum>

The code fails in javac 1.5.0_01 with an ERROR:
EnumTest.java:15: type parameter java.lang.Enum is not within its bound
        EnumSet<Enum> eSet = EnumSet.allOf(c);

Changing EnumSet<Enum> to EnumSet<Foo> resolves the javac error. I tried to
figure out the JLS3 interpretation of this, but got confused. 

//////////////////////////////////////////////////////
import java.util.EnumSet;

enum Foo
{
    blargh,
    baz,
    boz;
}

public class EnumTest
{
    public static void main(String[] args)
    {
        Class c = Foo.class;
        EnumSet<Enum> eSet = EnumSet.allOf(c);
    }
}