MATLAB: Do I get a warning about MathWorks being unable to detect Java Runtime Environment (JRE) version 6.0 or higher when downloading MATLAB products

MATLAB

When I download MATLAB products from my MathWorks account, I get the following warning:

 We cannot detect whether you have Java Runtime Environment (JRE) version 6.0 or higher, which is required to download multiple products at once. Without JRE version 6.0 or higher, you will have to manually download each product.
 Choose one of the following options to proceed:
 I have JRE--takes you to the next step in the download process. With JRE 6.0 or higher, you will be able to download multiple MathWorks products at once.
 Get JRE--takes you to Sun Microsystems Web site to download the latest version of JRE. Once you have downloaded JRE, you will be able to download multiple MathWorks products at once.
 Proceed Without JRE--takes you to the next step in the download process. You will have to manually download each product.

Best Answer

If you receive this warning, you may not have Java installed for the correct version of your Internet browser. If Java is not installed, please go to www.java.com to get the most recent download package for your browser.

You may also receive this warning when running a 32-bit browser with 64-bit JVM installed. If you choose "I have JRE", the next page will automatically prompt to install 32-bit JVM or it will continue the download process using 64-bit JVM.

If you have 32-bit JVM installed and run a 32-bit browser (or vice versa with 64-bit), it will avoid this warning.

If you are unable to download Java, you can also use the manual download method by choosing "Proceed Without JRE".

Related Solutions

MATLAB: Does mathworks.com not recognize I have Java installed when downloading

This is a known issue.

If you know you have Java already installed on your computer, you can safely avoid this warning by choosing "I have JRE", agree to the Software License Agreement, and then continue by choosing your OS and click the "Download" button. The download agent will then launch and start the download procedure.

If you do not have Java installed, you can workaround this issue by choosing one of the other options. If you do not wish to install JRE, select "Proceed Without JRE" and then choose your OS, and then proceed with a manual download.

MATLAB: Do I get an error that MATLAB cannot locate the JRE upon startup for a 64 bit Linux machine

This error indicates that you have installed the 32 bit version of MATLAB on a 64 bit machine. Generally this occurs when installing from downloads as the installer on the DVD will automatically install the correct version based upon the correct architecture for the OS.

To resolve this error you will either need to install the 64 bit version of MATLAB (glnxa64) or run MATLAB with the -glnx86 flag. Running a 32 bit version of MATLAB on a 64 bit machine is not supported. It is recommended to reinstall the correct version for your operating system. This can be done by running the installer from the DVD or by downloading the appropriate architecture files from MathWorks website. If downloading from the website, be sure to download all files (.common and .glnxa64) for each product and move them into the same directory as the installer. For more information on the files, see the related solution below.

If you need to run 32 bit MATLAB on a 64 bit machine, it must be launched with the -glnx86 flag:

matlab -glnx86

This issue can also occur sometimes for 64-bit MATLAB installation as well on Fedora Linux when the MATLAB_JAVA environment variable is not pointing to right location of Java. In this case either point it to the right location like:

$MATLABROOT/sys/java/jre/glnxa64/jre1.5.0/lib
or else remove this environment variable itself.

Best Answer

Related Solutions

MATLAB: Does mathworks.com not recognize I have Java installed when downloading

MATLAB: Do I get an error that MATLAB cannot locate the JRE upon startup for a 64 bit Linux machine

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