Comments on: Using Java 7 in Matlab R2013a and earlier

By: Yair Altman

Yair Altman — Thu, 06 Aug 2015 18:29:56 +0000

In reply to flo.

@Flo – R2011b uses JVM 1.6 by default – you’re trying to run it with a version that is 2 full generations newer, so I’m not surprised that some things simply don’t work. Try using 1.7, maybe you’ll have better luck…

By: flo

flo — Thu, 06 Aug 2015 17:05:16 +0000

I tried out Matlab 2011b and JVM 1.8
The GUI ist starting and plots are shown well.

If I set the figure visible off, an then set the figure visible on, there are just the axes elements, but no buttons or anything else.

Anybody with an idea to fix that?
Thanks!!

By: Fred

Fred — Sun, 31 Aug 2014 22:56:18 +0000

I came here since I wanted to run an old version MATLAB on Win8. I wasn’t intending to test with the newer jre. But it could not find the default jre, and it turns out this is a msvcr71.dll problem. I just googled a copy of that dll and placed it in C:\Program Files (x86)\MATLAB\R2010a\bin\win32, and the problem is solved.
Source: https://www.mathworks.com/matlabcentral/newsreader/view_thread/271589

By: Yair Altman

Yair Altman — Thu, 03 Jul 2014 19:58:34 +0000

In reply to Wayan Permana.

See http://undocumentedmatlab.com/blog/speeding-up-compiled-apps-startup

By: Wayan Permana

Wayan Permana — Thu, 03 Jul 2014 14:30:50 +0000

In reply to Yair Altman.

Thank you yair this actually solve my problem.
My bad, i was unaware deploytool use my default 1.7 jdk instead of jdk 1.6 that come from with MATLAB so i didnt recompile it that time.
This step works for me, set new JAVA_HOME variable to jdk 1.6 and recompile everything with deploytool.
Sorry yair, i have one more question about matlab ja builder, my m script run about 2-4 second in matlab but in java it run up to 2 minutes, is it normal? may i ask your suggestion to make it run faster in java?
I have a presentation about it, i dont want they think my program is slow because of inefficient algorithm.
Oh the script is simple, just about function optimization and draw plot of function.

By: Yair Altman

Yair Altman — Thu, 03 Jul 2014 07:24:04 +0000

In reply to Wayan Permana. @Wayan - it appears that some of your external Java classes (SimultanBoxGraph and possibly others) were compiled with JDK 1.7 (=51.0), and this does not work with 1.6. If you can, try recompiling everything using 1.6. Alternatively, try retrofitting your Matlab with JDK 1.7, as explained here. Alternatively, upgrade to Matlab R2013b (8.2) or newer, which uses 1.7 out-of-the-box. Alternatively, try figuring out the problem with the disappearing figure in 1.8, using MathWorks support (then return here to let us know if you discover anything useful).

By: Wayan Permana

Wayan Permana — Thu, 03 Jul 2014 01:15:31 +0000

Hi yair, Thanks for your hard work, it's really help me a lot. I have a problem with matlab r2013a ja builder, jar created by deploytool is working as expected in jdk 1.8 but figure is shown and dissapear again (figure contain no plot). Then i change jdk to 1.6u17 (64 bit) to match matlab version but when i run the jar again but it give following error in netbeans :

Exception in thread "main" java.lang.UnsupportedClassVersionError: XBoxCox/SimultanBoxGraph : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
	at tes.Tes11.main(Tes11.java:154)
Java Result: 1

Any suggestion, how to fix it? i really need the plot for presentation.

By: Java class access pitfalls | Undocumented Matlab

Java class access pitfalls | Undocumented Matlab — Wed, 02 Jul 2014 15:34:55 +0000

[…] if you do not have access to the source code, or if it uses some new JDK features), then consider installing a newer compatible JVM in Matlab.Note that when we try running the Java classes using the java executable (outside Matlab), we do […]

By: Martin Lechner

Martin Lechner — Wed, 02 Apr 2014 09:41:24 +0000

I tried Matlab R2014a with Java JDK8. Normal plots and the GUI’s from standard matlab work correct.

By: julien

julien — Tue, 14 Jan 2014 20:32:51 +0000

In reply to Yair Altman. Thanks for your fast answer, Yair. I already had a look on java forums and I did not find anything similar... For example, if you simply create a JFrame, add a component to the content pane and set its cursor from matlab command line, it works fine. I look forward to see your investigations!