Bugzilla – Full Text Bug Listing
| Summary: | [1.5] enum types cannot define a compareTo(Object o) method | ||
|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Olivier Thomann <Olivier_Thomann> |
| Component: | Core | Assignee: | Kent Johnson <kent_johnson> |
| Status: | VERIFIED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | P3 | CC: | markus.kell.r, philippe_mulet |
| Version: | 3.1 | ||
| Target Milestone: | 3.1 M5 | ||
| Hardware: | PC | ||
| OS: | Windows XP | ||
| Whiteboard: | |||
I20041208-1200: I guess this is the same problem: Eclipse compiles without error
and makes all m(..) override. Javac 1.5.0 spits errors (inline comments).
package override2;
public class Override2 {
public static void main(String[] args) {
A a= new A();
B b= new B();
C c= new C();
a.m(new Integer(1));
b.m(new Integer(2));
// c.m(new Integer(3)); // after uncommenting, javac says:
// reference to m is ambiguous, both method m(java.lang.Object) in override2.B
// and method <E>m(E) in override2.C match
a= b;
a.m(new Integer(11));
a= c;
a.m(new Integer(12));
b= c;
b.m(new Integer(21));
}
}
class A {
public <E extends Object> void m(E e) {
System.out.println("A: " + e);
}
}
class B extends A {
public void m(Object e) {
System.out.println("B: " + e);
}
}
class C extends B {
// javac says: name clash: <E>m(E) in override2.C and m(java.lang.Object) in
// override2.B have the same erasure, yet neither overrides the other
public <E extends Object> void m(E e) {
System.out.println("C: " + e);
}
}
Reworked our name clash detection. Added MethodVerify test035 Verified in I20050215-2300 |
Using latest, I can compile that code successfully, but it should report a name clash. public enum X { ; public int compareTo(Object o) { return 0; } }