If you encounter this error message: “training and test set are not compatible” , and are totaly sure, that the files are correct, try copying the header from one file to the other. This solved the problem for me! This seems to work for ARFF files only!

On Monday I willl receive my brand new Samsung Star mobile phone. This day will be the start of a new series of this blog about Samsung Widget Development! Stay tuned!

First information sources for this:

• http://www.bada.com
• http://innovator.samsungmobile.com

Using Cobertura 1.9.2 with JDK 1.6.0_14 raised the following exceptions:


Exception in thread "Thread-0" java.lang.ExceptionInInitializerError
at java.io.File.deleteOnExit(File.java:939)
at net.sourceforge.cobertura.util.FileLocker.(FileLocker.java:80)
at net.sourceforge.cobertura.coveragedata.ProjectData.saveGlobalProjectData(ProjectData.java:230)
at net.sourceforge.cobertura.coveragedata.SaveTimer.run(SaveTimer.java:31)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException: Shutdown in progress
at java.lang.Shutdown.add(Shutdown.java:62)
at java.lang.System$2.registerShutdownHook(System.java:1146)
at java.io.DeleteOnExitHook.(DeleteOnExitHook.java:20)

The newer versions of Cobertura fixed this issue!

Today i had to access a matlab script from a java program. After some hours of trying to get it work by using matlabs command line i found a method to call a matlab script without using the command line. Using matlab -r “functionName” didn’t work because of some unknown charset erros i haven’t found till now. The basic idea is based on this blog-post.

Therefore, a process must be created:


String command = "matlab -nosplash -nodesktop";
Process process = Runtime.getRuntime().exec(command);


Afterwards we obtain the standard-input of the process and send a command to be interpreted by matlab:


BufferedWriter out = new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
out.write("function_to_be_executed");
out.write("\n");
out.write("exit;") // this will close matlab after the execution finished!


If you like to see what is happening, try to read from the process.getInputStream()

hope that helps some of you!