摘要
Java 1.5加入許多新功能，包含enumeration。Java內部將enumeration做成class的形式，使得其constants就為instances，有著更強大的支援，附帶有variable、method等功能，不再只是單純的數字。但在class的條件之下，enumeration卻不行使用繼承的用法，以致與Java的核心概念有所衝突。因此本論文試著提出可繼承的Java enumeration，讓enumeration更為彈性，並且可在不更動Virtual Machine的前提之下能夠執行。
並列摘要
Java 1.5 adds many new features, including enumeration. It implements enumeration as class. It translates enumeration constants into class instances, so that an enumeration constant is not a pure number. Now, enumeration constant has variables and methods, and it is more powerful. However, inheritance between enumeration is not allowed in Java 1.5.This violates the kernel principle of object-oriented concept. In this thesis, we try to resolve this problem. Under the condition of not changing Java virtual machine, we try to make Java enumeration be inheritable.