title: How to convert AAR to JAR
body: <p><strong><em>Situation</strong>:</em> </p>
  
  <p>I intend to use a Java library and I only have an <em>AAR</em> file from a Maven repository but I need the <em>JAR</em> file.</p>
  
  <p><em>Background story:</em> </p>
  
  <p><em>I tried to compile a library, but its Gradle structure was unstable. So I asked for a compiled jar file, and its developer handed me an aar file from some Maven repository (the developer couldn't compile his own project).
  The Gradle configuration was a mess, it depended on multiple libraries and Gradle has thrown some exceptions.</em></p>
  
  <p><em>I tried to use it in my IDEA IDE, but it couldn't see it. A library project should be able to be compiled into a jar file, right?</em></p>
  
  <p><strong><em>Question</strong>:</em></p>
  
  <p><strong>What should I do to convert that AAR file to a JAR file?</strong> </p>