[GitHub] [rocketmq] coder-zzzz opened a new issue, #5256: tool.sh's function find_java_home sometimes failed

[GitBox]

coder-zzzz opened a new issue, #5256:
URL: https://github.com/apache/rocketmq/issues/5256

   ```shell
   find_java_home()
   {
       case "`uname`" in
           Darwin)
               JAVA_HOME=$(/usr/libexec/java_home)
           ;;
           *)
               JAVA_HOME=$(dirname $(dirname $(readlink -f $(which javac))))
           ;;
       esac
   }
   ```
   
   why not use "which java" instead of "which javac",
   sometimes we didn't install javac, but must install java


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