Cannot load classes that are not in my "(default package)" in Eclipse
Hi,
i spent few years with mxj, having my unique "/2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin" folder in the file "max.java.config.txt", max loading my classes without problems.
The problem is that I wanted to have others folders, to put my classes, because i want to organize them more clearly.
So, in Eclipse, I tried to make a new project (called "testsClasses")
/ and i tried also to make a new package (called "test2") in my original project ...
then I put theses new Eclipse folders in "max.java.config.txt" too, like this :
max.dynamic.class.dir /2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin (this one was already here)
max.dynamic.class.dir /2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin/test2
max.dynamic.class.dir /2-Erdna/eclipse/MyWorkspace/testsClasses/bin
...But it doesn't works, i cannot load the classes that are my new folders in max...
I get some error messages in the max window : (see picture)
I really don't understand what's happening. i've redone the max/eclipse tutorial from Adam, i think i didn't miss anything. maybe a problem in "max.java.config.txt". Isn't it possible to have more than one folder for mxj classes ?
Please help!
Thanks!
Yes it should work. I think the problems may lay in your files. Could you post the code please (and complete file path)?
Ok, after many tries of changing "max.java.config.txt" and restarting max without success, it finally worked for the classes in my NEW PROJECT after i restarted the macbookpro, hmm... But for my NEW PACKAGE, it still doesn't work...
max window always say the same :
"java.lang.NoClassDefFoundError: nothing2 (wrong name: test2/nothing2)
...
...
"
(the class ''nothing2'' is also in my new package called ''test2'' in my ''MyMxjClasses'' project)
it's just a simple class doing nothing, here is the code:
package test2;
import com.cycling74.max.*;
public class nothing2 extends MaxObject {
nothing2 (Atom[] a) {
declareInlets(new int[]{ DataTypes.ALL });
declareOutlets(new int[]{ DataTypes.ALL, DataTypes.ALL });
createInfoOutlet(false);
post("INIT");
}
public void bang() {
outlet(0, "BANG RECEIVED");
}
}
...where the line "package test2;" was automaticaly added by Eclipse (and if i suppress it, it doesn't compile)
Of course, the class loads perfectly when i put it in one of the other folders.
It looks like i can't load any class that is inside a package inside a project.
Thanks again for any help,
Alexandre
Java class files must live in a directory structure identical to their package name. The classpath should points to the root of that directory structure, not to a package subdirectory.
For example, a if you create a class declared like this:
package my.tests;
public class Test1 extends com.cycling74.max.MaxObject {
}it must be put it in the file ...src/my/tests/Test1.class.
In this case, eclipse will compile it and write the class file to ...bin/my/tests/Test1.class.
You should then set your classpath to ...bin, because that directory contains the root of the package hierarchy.
Is this clear?
it doesn't work.
Eclispe put all the classes in their right places as you say, i think.
>>You should then set your classpath to ...bin, because that directory contains the root of the package hierarchy.
If i understand well what you explain, as i have some classes in my default package, which are in:
/2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin,
and also have some classes in the test2 package, which are in:
/2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin/test2,
i should then only put :
max.dynamic.class.dir /2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin
in max.java.config.txt ?
then max could find what is in
/2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin
plus what is in
/2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin/test2
But this doesn't work. max doesn't find the classes in /test2, it just says : "Could not load class 'nothing2'". max can only find the classes from the default package of a project.
And, as i said above, when i add :
max.dynamic.class.dir /2-Erdna/eclipse/MyWorkspace/MyMxjClasses/bin/test2
in max.java.config.txt, i then get even more error messages :
java.lang.NoClassDefFoundError: nothing2 (wrong name: test2/nothing2)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at com.cycling74.max.MXJClassLoaderImpl.doLoadClass(MXJClassLoaderImpl.java:119)
at com.cycling74.max.MXJClassLoader.loadClazz(MXJClassLoader.java:88)
Could not load class 'nothing2'
Should i send a message to cycling74 to ask them ?
Thanks,
oohhhh, Sorry!
i just realised that i add to put [mxj test2.nothing2] instead of [mxj nothing2]
so stupid...
WORKING NOW...
(true i'm not a java expert.)