@classmethod
def global_javac_classpath(cls, products):
    """Returns a classpath entry for the java compiler library, useable as a tool.

        If no javac library is specified, will return an empty list.  The caller must handle this
        case by defaulting to the JDK's tools.jar.  We can't provide that jar here because we'd have
        to know about a Distribution.
        """
    return cls.global_instance().javac_classpath(products)
