单项选择题
A. View Helper
B. Front Controller
C. Composite View
D. Intercepting Filter
E. Business Delegate
F. Chain of Responsibility
多项选择题 A Company.com developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal?()
单项选择题 WhichHttpSessionmethodstoresanobjectinasession?()
单项选择题 Whichelementistheparentofthetaginthewebapplicationdeploymentdescriptor?()