103b9cbf206enterprise1bean.java~2~

java ejb开发 程序4、语句alter table people add(phone_number varchar2(10)) 的作用是 A 修改表结构 B 为people表添加约束

package hello;

import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.ejb.CreateException;

public class HelloEJBBean
    implements SessionBean {
  SessionContext sessionContext;
  public void ejbCreate() throws CreateException {
  }

  public void ejbRemove() {
  }

  public void ejbActivate() {
  }

  public void ejbPassivate() {
  }

  public void setSessionContext(SessionContext sessionContext) {
    this.sessionContext = sessionContext;
  }
}