# Package org.apache.geode.lang

- Interface Summary
  Interface | Description
  --- | ---
  Identifiable<T extends java.lang.Comparable<T>> | The Identifiable interface defines a contract for classes whose Object instances can be uniquely identified relative to other Object instances within the same class type hierarchy.

- Exception Summary
  Exception | Description
  --- | ---
  AttachAPINotFoundException | The AttachAPINotFoundException class is a RuntimeException indicating that the JDK tools.jar has not been properly set on the user's classpath