If your path have less than 1024 characters can execute (Run as Administrator) this script: off I hope this help someone who want to change it frequently.
Type SJV 8 OR SJV it will switch to Java 8. Now open new powershell window and just type SJV 11 it will switch to Java 11. So now SJV will act as command to "Switch Java Version". Save this script file as SJV.ps1 and add this file location in your machine's Path environment variable.
$env:Path = $env:JAVA_HOME+'\bin '+$env:Path
You can add n number of version using if and else blocks. Now open new command window and just type SJV 11 it will switch to Java 11.Ĭreate powershell(ps1) file using below code. Save this batch file as SJV.bat and add this file location in your machine's Path environment variable. Under the “JavaVirtualMachines” folder, you should find JDK folders that name the specific version and update.In case if someone want to switch frequently in each new command window then I am using following approach.Ĭreate batch file using below code. To find that, navigate to the folder where you installed the JDK. You may need to change the orange part in the command, which should refer to the specific version of java you have installed on your machine (version and update). Well, you can specify which version of Java you want to invoke by doing this: Let's say your system is set up to use Java 1.8 by default, but for some reason (to replicate an old analysis?) you need to run an older version of GATK that requires Java 1.7. Yes, it is possible to have several different versions of Java installed on your system! There are several ways to manage this here's a way to do it that we find reasonably straightforward. Selecting between different versions of Java on the same system So get that package, and don't be put off by the "Development Kit" bit in the name there's no difference from the end-user perspective.ģ. However, we find that if you get the JDK (Java Development Kit) package instead, everything works right away. The most common problem we see people run into is that on MacOSX, if you get the Oracle JRE (Java Runtime Environment) package, installing the new Java version doesn't automatically make it available to run in the terminal - and depending on versions we've had a tough time figuring out out to address that. Then follow the instructions provided by Oracle or OpenJDK. Generally it's a matter of going to either the Oracle website or the OpenJDK website and picking the distribution that matches our version requirements and your operating system. The bit of the output that we care about here is the line that says something like java version "1.8.0_65".ĭepending on your operating system this can be more or less painful. You can check your Java version by opening your terminal application and running the following command: java -version
#Check openjdk version software#
To sidestep this sort of problem entirely, we recommend using the Docker container system, if that's an option on your infrastructure, because that takes care of all software requirements and dependencies for you. If you try to run it with any other version, you'll get an error that will include this line: Unsupported major.minor version As documented here, GATK requires a particular major version of Java.
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