A.s==t B.s.equals(t) C.s==u D.t.equals(u)
多项选择题Which of the following will definitely stop a thread from executing?()
A.wait() B.notify() C.yield() D.suspend() E.sleep()
多项选择题The ThreadGroup class instance()
A.Allows threads to be manipulated as group B.Provides support for ThreadDeath listeners C.May contain other ThreadGroups D.Must contain threads of the same type
多项选择题下面哪些是J2EE中的23种设计模式?()
A.Adapter B.Observer C.Bridge D.Singleton
多项选择题log4j中输入日志有哪些级别设置?()
A.INFO B.DEBUG C.FATAL D.WARN
单项选择题|DF|A3.split( | ).length的结果是()
A.3 B.4 C.5 D.6 E.7