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J2EE包括以下技術:??
EJB:Enterprise?? JavaBeans?? 企業JavaBean組件??
IDL:Interface?? Definition?? Language?? 接口定義語言??
JMS:Java?? Message?? Service?? Java消息服務??
JNDI:Java?? Naming?? and?? Directory?? Interface?? Java命名目錄接口??
RMI:Remote?? Method?? Invocation?? 遠程方法調用??
JTA:Java?? Transaction?? API?? Java事務API??
JTS:Java?? Transaction?? Service?? Java事務服務??
Object?? Serialization:對象序列化??
JavaMail:Java郵件服務??
JDBC:數據庫訪問API??
JSP:Java?? Server?? Pages??
Servlet:??

EJB分為三種:??
Session?? Bean(會話BEAN)??
Entity?? Bean(實體BEAN)??
Message?? Driver?? Bean(消息驅動BEAN)??

Session?? Bean分為兩種:??
Stateless?? Session?? Bean(無狀態會話Bean)??
Statefull?? Session?? Bean(有狀態會話Bean)??

Entity?? Bean分為兩種:??
CMP:Container?? Manager?? Persistence(容器管理持久性)
BMP:Bean?? Manager?? Persistence(Bean管理持久性)??

其他縮寫名詞:??
DTO:Data?? Transport?? Object?? 數據傳輸對象??
JDO:Java?? Data?? Object??
DAO:Database?? Access?? Object?? 數據庫訪問對象??
POJO:Proterozoic?? Java?? Object?? Java原生對象??
VO:Value?? Object?? 值對象??
SOAP:Simple?? Object?? Access?? Protocol?? 簡單對象訪問協議??