I have a problem updating MATLAB's dynamic Java classpath when there are variables in the workspace that point to Java objects whose classes are on the dynamic classpath.
I have two Java test classes matlabtest.Test1 and matlabtest.Test2:
>> ls java1\matlabtest\
. .. Test1.class
>> ls java2\matlabtest\
. .. Test2.class
Adding the first directory to the classpath and instantiating matlabtest.Test1 is not a problem:
>> javaaddpath('java1')
>> test1 = matlabtest.Test1()
test1 =
matlabtest.Test1@606032
However, now adding the second directory and instantiating matlabtest.Test2 does not work:
>> javaaddpath('java2')
Warning: Objects of matlabtest/Test1 class exist - not clearing java
> In javaclasspath>doclear at 379
In javaclasspath>local_javapath at 197
In javaclasspath at 119
In javaaddpath at 69
>> test2 = matlabtest.Test2()
??? Undefined variable "matlabtest" or class "matlabtest.Test2".
A workaround:
>> clear test1;
>> clear java;
>> test2 = matlabtest.Test2()
test2 =
matlabtest.Test2@fcc070
However, this workaround is not possible in my case (the relevant objects belong to another product and I cannot simply clear them without upsetting my users). I also cannot MATLAB's static Java classpath (the exact directories are only known at runtime).
So: How can I create Java objects from truly dynamic locations?
