How do I print the class structures in a jar file using the javap tool?

I want to list the methods of the class files in the jar using the javap tool. How do I do it so that it lists the methods and members of all the class files in the jar. Right now I am able to do it for just one class at a time.

I am expecting something like if I say

javap java.lang.*

it should enlist the methods and members of all the classes in java.lang package. If javap is not capable of that, are there any such tools available?

Answer

#!/bin/bash
# Set the JAR name
jar=<JAR NAME>
# Loop through the classes (everything ending in .class)
for class in $(jar -tf $jar | grep '.class'); do 
    # Replace /'s with .'s
    class=${class////.};
    # javap
    javap -classpath $jar ${class//.class/}; 
done