MATLAB as Java IDE

Hi,

Is there a way to use MATLAB as Java IDE (like NetBeans, Eclipse, ecc.) ?

How can I find a guide or somewhat for it ?

thanks

Answer 1

[Titus Edelhofer]

Hi Alessandro,

no, not really. Of course you can edit the java files with the MATLAB editor, and compile them calling the java compiler from command window e.g. like

!javac -cp . yourClass.java

but I only do this for very (!) simple java files. Otherwise, that's what eclipse and NetBeans are for ...

Titus

Answer 2

[Malcolm Lidierth]

It would probably be better to use NetBeans and co. for the development, compiling etc. But you can usefully use MATLAB as an interactive environment for testing the code - start MATLAB with the -jdb option and attach your IDE's profiler to the specified port. Code snippets can also be tested out by running a Java console from the MATLAB command line e.g. the Groovy Console gives you a GUI for loading jars etc.

If you are on a Mac, you can even recompile, clear classes and reload the jars without exiting MATLAB - albeit with some limitations as the method signatures will be get cached.

For details, look at Yair Altman's Undocumented MATLAB blog (and book):

http://undocumentedmatlab.com/

[cyberdyne]

Will I find that in the book?

[Malcolm Lidierth]

Debugging - yes.

[cyberdyne]

I've found that page; section 1.6. but....on page 31 what means "In Matlab, add the folder of the output classes from step 1 into Matlab’s javaclasspath"? Have I to set an exported .jar file with classes by eclipse?

Also..in the same section at point 7. how can I instantiate or execute java code in matlab?

Answer 3

[Yair Altman]

Take a look at MatClipse, a Matlab plugin for Eclipse: http://code.google.com/a/eclipselabs.org/p/matclipse/

[cyberdyne]

MatClipse "imports" matlab into eclipse. I need to use matlab as java ide because I've to use someother toolbox.

Answer 4

[Wolfgang Garn]

I have to agree with Titus. However, one could create a very simple IDE. You can add a new shortcut to the quick access toolbar:

Here is some underlying code (far from perfect, but a start):

function javac
% Compiles "simple" java files currently in the Matlab editor to its java classes
% TODO: does not work for packages - use javaclasspath, parse file, consider dependencies
openDocuments = matlab.desktop.editor.getAll;
files = {openDocuments.Filename};
original_folder = pwd;
for filename=files
   [pathstr,name,ext] = fileparts(filename{1});
   if strcmp(ext,'.java')
      cd(pathstr);
      dos(['javac ' name ext],'-echo'); % assumes javac is on path
      % TODO: find javac automatically, usually in C:\Program Files\Java\jdk1.7.0_45\bin
      fprintf(1,'Compiled %s%s\n',name,ext);
      javaaddpath(pathstr); % to make changes active in Matlab reload java class path
      % TODO: consider static class path as well
   end
end
cd(original_folder);
%msgbox('Compiled all current java files to classes','javac');