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This article mainly introduces "how to use multiple versions of jdk in mac system at the same time". In daily operation, I believe many people have doubts about how to use multiple versions of jdk in mac system at the same time. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to use multiple versions of jdk in mac system at the same time!" Next, please follow the editor to study!

Source / .bash_profile

Recently, there was a problem that the old project could not operate in a higher version of jdk, so it was necessary to roll back the jdk to 1.8.

However, the jdk15 included in the mac system has tried many ways but failed to uninstall it, resulting in the default use of jdk15.

Later, I looked up the relevant information and found a more effective method.

First step, install jdk8 first

Second, open the terminal and enter:

/ usr/libexec/java-home-V

The third step is to modify the environment variable: vim ~ / .bash_profile

# set jdk8export JAVA_8_HOME='$ (/ usr/libexec/java_home-v 1.8.0 / 282)'# Note that the version number here should be the same as the jdk version number seen in the previous step # set jdk15export JAVA_15_HOME='$ (/ usr/libexec/java_home-v 15)'# use jdk8JAVA_HOME=$JAVA_8_HOMEPATH=$JAVA_HOME/bin:$PATHCLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jarexport JAVA by default _ HOME PATH CLASSPATHalias java15= "export JAVA_HOME=$JAVA_15_HOME" alias java8= "export JAVA_HOME=$JAVA_8_HOME"

Step 4: make the environment variable effective

Source / .bash_profile

Step 5: test

At this point, the study on "how to use multiple versions of jdk in mac systems at the same time" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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