java - how to know which class / package/ methods used by given jar file? -

I have a jar file, I want to know that external classrooms and methods are used by classes inside the JR file . Can anyone suggest any tool to me?

For example - if the two sections below are packed in myjar.jar

  import java.util.Vector; Square MyJarClass {public static zero main (string arguments []) {vector v = new vector (); Other class second = new other class (); V.addElement ("A"); Another.doSomething (); When I supply that jar for a device - the device should be shown to  java.util.Vector  and     code> Vector.ad elements ()  are from external sources (not present in  MyJar.jar ) 
 
 forgot to mention, I do not have access to source code is. 
 

easy

  import com example . *;  

Possible

  list & lt; Com.example.MyType & gt; = New Arrestist & lt; Com.example.MyType & gt; ();  

a challenge

  class  

Impossible mission

  list & lt; String & gt; Class = getClassNamesFromUrl ("http://example.com/classes.txt"); For (string classname: classes) {doSomethingWith (class.forName (className)); }  

I support John's advice to look at the Byte Code (BCEEL), but just be aware, because it is not possible to read all dependencies in jars normally They can be dynamic.

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It is difficult to say that there is a device, then look at those directories:

• (Some For working on the jar in applications, it is also like the Zendaprad. Journalist has also promised, but this is a lot

Further studies

• (especially)