“mvn -version”中的 java 版本与 mac 的“java -version”中的版本不同

Question

As the screenshot shows, the java version is different, how can I change the java version in maven to 1.8?

Answer 1

Few things to debug

1. Please check for the cat /usr/local/Cellar/maven/3.6.3_1/bin/mvn (maven uses this if present) - not sure if this has anything with homebrew installed maven. If there are any hardcoded versions, it might cause a difference in behavior.
2. echo $JAVA_HOME (maven uses this path and complains if not found)
3. did you set JAVA_HOME explicitly in any of the terminal sessions?

Also, how did you install java and maven? are they both installed using homebrew ?

Additional info

1. the following alias will help to switch between java versions easily

alias java11="export JAVA_HOME=`/usr/libexec/java_home -v 11`"
alias java8="export JAVA_HOME=`/usr/libexec/java_home -v 1.8`"

2. this can be added to .bashrc or .zshrc