MATLAB as Java IDE

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cyberdyne
cyberdyne 2012-9-10
回答： Wolfgang Garn 2014-12-1
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

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回答（4 个）

Titus Edelhofer
Titus Edelhofer 2012-9-11
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
Malcolm Lidierth
Malcolm Lidierth 2012-9-11
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/
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Malcolm Lidierth
Malcolm Lidierth 2012-9-16
Debugging - yes.
cyberdyne
cyberdyne 2012-9-16
编辑：cyberdyne 2012-9-16
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?

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Yair Altman
Yair Altman 2012-9-11
Take a look at MatClipse, a Matlab plugin for Eclipse: http://code.google.com/a/eclipselabs.org/p/matclipse/
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cyberdyne
cyberdyne 2012-9-14
MatClipse "imports" matlab into eclipse. I need to use matlab as java ide because I've to use someother toolbox.

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Wolfgang Garn
Wolfgang Garn 2014-12-1
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');

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