I\'m trying to create a maven project by following this tutorial https://docs.mulesoft.com/mule-user-guide/v/3.7/building-a-mule-application-with-maven-in-studio that time t
I think that is problem with your mule studio Java setting. Mule studio by default points JRE not JDK. tools.jar is available under JDK folder. See the below link which tell you how to add JDK to studio then use that to build
http://www.gamefromscratch.com/post/2011/11/15/Telling-Eclipse-to-use-the-JDK-instead-of-JRE.aspx