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How to change Java (JVM) version in Mac OS?


Recently, I had an issue to change my default JVM version in my Mac machine. I want to provide steps to change java version with Mac OS. Use below command to check current default java version:

java -version

Download required java version and install it before proceed to further.

Open terminal, and run below command:

cd /System/Library/Frameworks/JavaVM.framework/Versions/

Check where your java is installed, in general, you can find your java installation in the below location:

/System/Library/Java/JavaVirtualMachines
/Library/Java/JavaVirtualMachines/

Find the right jdk path and create a softlink as shown below: Here I am making Java 7 as default version.

rm CurrentJDK
ln -s /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/ CurrentJDK

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Knowledge Centre
Can we call servlet destory() from service()?
As you know, destory() is part of servlet life cycle methods, it is used to kill the servlet instance. Servlet Engine is used to call destory(). In case, if you call destory method from service(), it just execute the code written in the destory(), but it wont kill the servlet instance. destroy() will be called before killing the servlet instance by servlet engine.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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