当我使用“ mvn -v”时，为什么我的电脑中有两个java路径

Question

When I use mvn spring-boot:run to run a Spring Boot project, I find if use the command in Cmd , it works. but if I use it in Git Bash , it can't work.

So I use java -version and mvn -v to view the Java and maven version.

java -version give me the same result, but mvn -v result is different, as the picture shows:

And when I see my java path, I'm sure it's C:\\Program Files\\Java\\jdk1.8.0_151

So I want to know, why there are two Java paths in my PC when I use mvn -v ?

Answer 1

Both the java executable and Maven by default use the JDK that is specified in the $JAVA_HOME environment variable.

You are executing java and Maven ( mvn ) in different environments ( cmd.exe in one case and Git Bash in the other case), so the most likely explanation is that $JAVA_HOME is set to different JDKs in the respective environments.

You can check the content of $JAVA_HOME with echo $JAVA_HOME .