精美通用ppt模板月色飛機(jī)主題-展示頁
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【正文】 于初學(xué)者， EJB的 API顯得太過困難；對于許多程序員來說，書寫那些必須拋出特定異常的接口并將 bean類作為抽象類實(shí)現(xiàn)的做法既不直觀也不正常。 interface code). Such code addresses the same types of problems, and solutions to these problems are often repeatedly reimplemented by programmers. Enterprise JavaBeans are intended to handle such mon concerns as persistence, transactional integrity, and security in a standard way, leaving programmers free to concentrate on the particular problem at hand. ? Accordingly, the EJB specification details how an application server provides: 樣例文本 C ? 由于 IBM和 Sun Microsystems等 EJB提倡者力推其前景，起初一些大公司紛紛采用 EJB部署他們的系統(tǒng)。 code typically found in enterprise applications (as opposed to 39。 interface code). Such code addresses the same types of problems, and solutions to these problems are often repeatedly reimplemented by programmers. Enterprise JavaBeans are intended to han
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