if [ -e "$javaSource" ]; then
      if [ ! -e "$javaClass" ]; then
        log " - Compiling MavenWrapperDownloader.java ..."
        ("$JAVA_HOME/bin/javac" "$javaSource")
      fi
      if [ -e "$javaClass" ]; then
        log " - Running MavenWrapperDownloader.java ..."
        ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$wrapperUrl" "$wrapperJarPath") || rm -f "$wrapperJarPath"
      fi
    fi
  fi
fi