http://bugzilla.novell.com/show_bug.cgi?id=555419 Michal Vyskocil changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |mvyskocil@novell.com Resolution| |INVALID --- Comment #1 from Michal Vyskocil 2009-11-16 11:59:04 UTC --- Your code is not valid. Even if the compiler error message is cryptic, it is clear - it says there is no method named handle. You might be surprised why, as you already declared it. The reason is you try to call a *generic* method (and therefor compiler adds the mess with capture#31 to the error message). The Java Language Specification [1] says in 8.4.4 Generic Methods: A method is generic if it declares one or more type variables. So the simple - public void handle(T obj) { + public <T> void handle(T obj) { corrects it. For more explanation follow the Generic methods chapter [2] in Generics Tutorial. [1] http://java.sun.com/docs/books/jls/third_edition/html/classes.html#40420 [2] http://java.sun.com/docs/books/tutorial/extra/generics/methods.html -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

http://bugzilla.novell.com/show_bug.cgi?id=555419 --- Comment #3 from Archie Cobbs 2009-11-16 17:22:38 UTC --- After reading over this again, I think the initial review simply missed the call to "foo.cast()" in the apply() method of the original program. Of course without that the program would be invalid. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

http://bugzilla.novell.com/show_bug.cgi?id=555419#c5 Michal Vyskocil changed: What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |RESOLVED Resolution| |INVALID --- Comment #5 from Michal Vyskocil 2009-11-18 10:37:53 UTC --- Hi Archie, this is a bugzilla, not a Java programming forum. Are you still sure there's a bug in javac compiler? From my POW there's a problem you don't understand the generics too much to write code you'd like to. The apply don't compile because the scope of it's <T> is local and not inherited from class definition. The hotfix should be - public <T> void handle(T obj) + public <T extends Iterable> void handle(T obj) but there should be some better way how to write the code you need. I'm sure there's no need to write an explicit constructor with a type and there are something like Type bounds, but I'm not experienced to give you better help, sorry. Please use some Java programming forum - they'll provide you a better hints than me. Anyway, I'm really sure there's *no bug* in javac regarding generics, so I'm closing this bug again. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.