[Java 基礎範例] Hashtable 雜湊表與 Enumeration 列舉器操作全解

程式功能

封裝角色權限管理類 RoleRight，使用 Hashtable 存儲角色→權限代碼映射，實現初始化、查詢、新增、刪除、修改、列印全套操作，並示範 Enumeration 遍歷鍵值。

核心代碼

public class RoleRight {
    private static Hashtable rightList = new Hashtable();

    public void init() {
        String[] roles = {"admin","satrap","manager","user","guest"};
        String[] codes = {"10001","10011","10021","20011","24011"};
        for (int i=0;i