compareTo screwing with me

[Jeffrod]

Hey i get this error when compiling:
"GraphMethods.java:57: cannot find symbol
symbol : method compareTo(E)
location: class java.lang.Object
etc"

The code in question looks like this:

if(current.compareTo(to)==0)

in this class:
class GraphMethods<E extends Comparable<E>>

both current and to is definately a E.

the strange thing is that the following code works without any problems whatsoever:

if(cmp.getDest().compareTo(e2)==0)

in this class:
class ListGraph<E extends Comparable<E>> implements Graph<E>

in the last case e2 is declared as E and getDest() returns a E.

I cant for the life of me see what i did differently in the classes (and yes i do import the exact same packages, only java.util.* in both).:mad:

[baf06]

did you try to fix this difference ? :

class GraphMethods<E extends Comparable<E>>

class ListGraph<E extends Comparable<E>> implements Graph<E>

I am not sure about it but this is what i understand from your error

"GraphMethods.java:57: cannot find symbol

[Jeffrod]

well Graph is a interface with about a half dozen methods used in different classes(the ListGraph class for example) so i hope thats not the solution because it would mean id have to add all those methods to GraphMethods :(

After taking a break for some food i looked at my code again and i finally did notice (remember) a difference. The method in GraphMethods is declared as Static. Since im a bit iffy on what exactly it means im not sure how it would affect things or how i would fix it.

"static<E> List<ListEdge<E>> shortestPath(Graph graph, E from, E to)"
if the method in GraphMethods

"public ListEdge<E> getEdge(E e1, E e2)"
is the method in ListGraph