Bug 94648

Description Giannandrea Castaldi 2005-05-11 06:24:44 EDT

Hi,
using eclipse 3.1 M6 the compiler gives an error if I try to call the method
java.util.Collections.sort(List<T>) with a list that contains objects of a type
that implements Comparable. It seems that the compiler don't recognize that my
type implements Comparable.
The error message is the following: "Bound mismatch: The generic method
sort(List<T>) of type Collections is not applicable for the arguments
(List<MyClass>) since the type MyClass is not a valid substitute for the bounded
parameter <T extends Comparable<? super T>>". The problem there is both on
windows and linux.
With eclipe M4 there is no problem. Here below there is an example with point
out where there is the error.

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class MyClass implements Comparable {
	public int compareTo(Object o) {
		return 0;
	}

	public static void main(String[] args) {
		List<MyClass> myList = new ArrayList<MyClass>();
		Collections.sort(myList); <-- Here is the error
	}
}

Thanks.

Giannandrea