title: Use javap to get method signatures in for Android Activity
body: <p>When I write in command line <code>javap -s java.awt.Label</code>, I succesfully get signatures for <code>Label</code>. Now I want to get signatures for Android Activity class. But if I write <code>javap -s android.app.activity</code> it results in <code>ERROR: Could not find android.app.activity</code>.</p>
  
  <p>What am I doing wrong? Should I change something in PATH env var or whatever?</p>