Re: Eclipse 3.5 mixed Scala/Java: errors in Java editor but still compiles?

On Fri, Jul 17, 2009 at 2:24 PM, Naftoli Gugenheim wrote:
> Is JDT generally fine with identifiers containing '$'?

Surprisingly enough it does seem to be happy with identifiers
containing $, the following displays no errors in the Java editor and
even code-complete works fine:

package com.pongr.mixedtest;

public class Dollar$ {
public static String billYall() {
return "Wu Tang C.R.E.A.M.";
}
}

package com.pongr.mixedtest;

public class Test {
public static void main(String[] args) {
System.out.println(Dollar$.billYall());
}
}

Does anyone know why the Eclipse Java editor complains when trying to
access a Scala object from Java?

> On Fri, Jul 17, 2009 at 1:04 PM, Zach Cox wrote:
>>
>> Hi - I'm starting to work Scala into a large Java project and just
>> doing some basic tests.  I just did a fresh install of Eclipse 3.5 and
>> the 2.7.5.final Scala plugin (on Ubuntu 9.04 with Java 1.6.0.14).  I
>> created a new Scala project and then created a Scala object and a Java
>> class as follows:
>>
>>
>> package com.pongr.mixedtest
>>
>> object MyObject {
>>  def get() = "from scala object"
>> }
>>
>>
>> package com.pongr.mixedtest;
>>
>> public class Test {
>>        public static void main(String[] args) {
>>                System.out.println(MyObject$.MODULE$.get());
>>        }
>> }
>>
>>
>> Eclipse compiles everything just fine and running Test prints "from
>> scala object" to the console, as expected.  But in the Eclipse editor
>> for Test.java, the MyObject$.MODULE$ part is red-underlined with the
>> error "MyObject$.MODULE$ cannot be resolved".
>>
>> This isn't a deal-breaker since everything still compiles & runs but
>> it is slightly annoying to see the error in the Java editor.  Can I
>> tweak the Eclipse install somehow to get rid of these types of error
>> messages in the Java editor?  Or do I just need to leave comments in
>> the code like "ignore the cannot be resolved error on the next line"?
>>
>> Thanks,
>> Zach
>
>