MATLAB: Error building with JA Builder

javaMATLABMATLAB Compiler SDK

I followed this video http://www.mathworks.it/videos/using-matlab-builder-ja-68970.html with MATLAB 2012a and win64, but when I press build it retuns this error:

Error: An error occurred while shelling out to javac (error code = 1).
    Unable to build executable.

and building fails.

I setted env. variable like…

JAVA_HOME to C:\Program Files\Java\(JDK 1.6.0.35Folder)\bin ('cause javac.exe is in there)

PATH to C:\Program Files\Java\jdk1.6.0_35\bin;C:\Program Files\OpenNI\Bin64;C:\Program Files\PrimeSense\NITE\bin64;C:\Program Files\MATLAB\R2012a\runtime\win64;C:\Program Files\MATLAB\R2012a\bin;C:\Program Files\MATLAB\MATLAB Compiler Runtime\v717\runtime\win64 (openNI and NITE are library that I need to work with MSKinect)

Others Java IDE like NetBeans and Eclipse work.

Best Answer

Hi,

please setup up JAVA_HOME only. Remove the JAVA entry from PATH. On my machine my JAVA_Home points to:

JAVA_Home=C:\Program Files\Java\jdk1.6.0_22

and it works fine. I have seen that error when building JAVA project in netbeans. This was raised by an empty file without extension with the name "java" and "javac". Check your bin folder of the JDK installation for those files. If they are in there, remove them or give them an extension, e.g. .old.

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MATLAB: Do I receive a “java.lang.OutOfMemoryError: Java heap space” error after upgrading to Database Toolbox 3.5.1 (R2009a)

In Database Toolbox 3.5.1 (R2009a) the default value of the JDBC property 'defaultRowPrefetch' was changed from 10 to 10000. This change should increase the performance of the toolbox, however it will also increase the memory requirements of the toolbox.

To prevent the out of memory error from occuring, you can change this property back to its default value; below instructions for this are given for different versions of the toolbox:

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MATLAB: Create a Java Package with MATLAB Code Error

This is due to file access permissions. In my case, I got the following error.

C:\Program Files\makesqr\application>javac -classpath "C:\MATLAB\MATLAB_Runtime\v94\toolbox\javabuilder\jar\javabuilder.jar";.\makesqr.jar .\getmagic.java
.\getmagic.java:4: error: error while writing getmagic: .\getmagic.class (Access is denied)
class getmagic
^
1 error

javac tries to create getmagic.class file, but normal users do not have a permission to write a file under C:\Program Files.

I think there are two options.

Launch command prompt as Administrator, then execute the javac command.
Install makesqr package in another folder where normal users have a permission to write

Best Answer

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MATLAB: Do I receive a “java.lang​.OutOfMemo​ryError: Java heap space” error after upgrading to Database Toolbox 3.5.1 (R2009a)

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MATLAB: Do I receive a “java.lang.OutOfMemoryError: Java heap space” error after upgrading to Database Toolbox 3.5.1 (R2009a)