Version 0.2 Dec 25, 2005
*. Included constructor mehtod callees and callers

Version 0.1 Dec 12, 2005
Handlings:
*. Ignore the method calls of all classes that are explicitly declared in import and whose declared names start with "java"
*. Ignore the method calls of all classes whose names start with "java".
*. We resolve reference types by the following mechanisms:
    -- object field declarations
    -- local variable declarations
*. We make the reference type in local variable more complete by adding prefix of the import declaration

Limitations
*. We cannot resolve the receiver reference type for a method call if the reference is a array element. Currently
  we ignore these method calls. For example, we ignore the accept method call in
	Attribute[] attributes = bcelMethod.getAttributes();
        DeprecatedVisitor visitor = new DeprecatedVisitor();
        for(int ii = 0; ii < attributes.length; ii++)
        {
            attributes[ii].accept(visitor);
            if(visitor.isDeprecated())
            {
                return true;
            }
        }

*. We cannot resolve the receiver reference type for a method call if the reference is implicit return value of
another method call. Currently
  we ignore these method calls. For example, we ignore the accept method call in:
          f().accept(visitor);


TODO:
*. Include constructor method calls
*. When there are multiple if enclosing, we cannot correctly label ELSE.
*. Switch hasn't been fully testsed

Mining considerations:
*. Maybe package name of those method calls' classes can be used for clustering