Quartz是一个开源的作业调度框架，它完全由Java写成，并设计用于J2SE和J2EE应用中。它提供了巨大的灵 活性而不牺牲简单性。你能够用它来为执行一个作业而创建简单的或复杂的调度。它有很多特征，如：数据库支持，集群，插件，EJB作业预构 建，JavaMail及其它，支持cron-like表达式等等。-Quartz is a digitally native news outlet for the new global economy.... Pull down to refresh...A

Java EJB写的Calculate计算器，学习EJB的可参考下 -Java EJB wrote Calculate calculator, learn EJB can refer to the following

XDoclet is a tool that evolved on the basis of EJBDoclet, created by Rickard Oberg. It's easy to manage: go through the bean class itself to see full components instead of traversing multiple EJB files. How did it do it? Java unless it has a Javadoc

Alumni system portal using Java EE, EJB and JDBC were used along with Java server Faces framework.