单选题A developer wants too use EL to invoke a function using S{my：bloof（“foof”）}. Which is always true？（）AThe method invoked by this function must be statie.BThe function class must implement the Function interface.CThe expression is NOT a valid EL expressi

题目
单选题
A developer wants too use EL to invoke a function using S{my：bloof（“foof”）}. Which is always true？（）
A

 The method invoked by this function must be statie.

B

 The function class must implement the Function interface.

C

 The expression is NOT a valid EL expression for invoking a function.

D

 The function must be declared in a web.xml file using the  element.

E

 The function class must have a method with the signature：Void bloof （java.lang.Strings）

相似考题

1.Evaluate the following function code:Which statement is true regarding the above function? ()A. The cached result becomes invalid when any structural change is done to the EMPLOYEES table.B. If the function execution results in an unhandled exception, the exception result is also stored in the cache.C. Each time the function is invoked in a different session, the current result in the result cache gets overwritten.D. If the function is invoked with a different parameter value, the existing result in the result cache gets overwritten by the latest value.

2.In C program, all variables must be(70)before use, usually at the beginning of the function before any(71)statements.A．statedB．writedC．illustratedD．declared

3.A programmer must know about a function's ______ to call it correctly.A．locationB．algorithmC．InterfaceD．statements

4.A programmer must know about a function’s(74)to Call it correctly．A．locationB．algorithmC．InterfaceD．statements

参考答案和解析
正确答案： C
解析： 暂无解析
更多“单选题A developer wants too use EL to invoke a function using S{my：bloof（“foof”）}. Which is always true？（）A  The method invoked by this function must be statie.B  The function class must implement the Function interface.C  The expression is NOT a valid EL ex”相关问题

  • 第1题：

    Which of the following statements describe the use of the keyword

    static?

    a) Within the body of a function: A static variable maintains its value

    between function revocations

    b) Within a module: A static variable is accessible by all functions

    within that module

    c) Within a module: A static function can only be called by other

    functions within that module


    正确答案：
     

  • 第2题：

    The purpose of a programming system is to make a computer easy to use. To do this, it furnishes languages and various facilities that are in fact programs invoked and controlled by language features. But these facilities are bought at a price: the external description of a programming system is ten to twenty times as large as the external description of the computer system itself. The user finds it far easier to specify any particular function, but there are far more to choose from, and far more options and formats to remember. Ease of use is enhanced only if the time gained in functional specification exceeds the time lost in learning, remembering, and searching manuals. With modern programming systems this gain does exceed the cost, but in recent years the ratio of fain to cost seems to have fallen as more and more complex（ ）have been added. Because ease of use is the purpose, this radio of function to conceptual complexity is the ultimate test of system design. Neither function alone nor simplicity alone（ ）a good design. This point is widely misunderstood. Function, and not simplicity, has always been the measure of excellence for its designers. As soon as ease of use is held up as the criterion, each of these is seen to be（ ）, reaching for only half of the true goal. For a given level of function, however, that system is best in which one can specify things with the most simplicity and straightforwardness. （ ）is not enough. Mooer’s TRAC language and Algol 68 achieve simplicity as measured by the number of distinct elementary concepts. They are not, however, straightforward. The expression of the things one wants to do often requires involuted (复杂的）and unexpected combinations of the basic facilities. It is not enough to learn the elements and rules of combination; one must also learn the idiomatic usage, a whole lore of how the elements are combined in practice. Simplicity and straightforwardness proceed from conceptual（ ）. Every part must reflect the same philosophies and the same balancing of desiderata. Every part must use the same techniques in syntax and the analogous notions in semantics. Ease of use, then, dictates unity of design, conceptual integrity.

    A.systems B.functions C.programs D.manuals A.defines B.can be C.constructs D.costs A.stabilize B.equalized C.unbalanced D.balanced A.Function B.System C.Straightforwardness D.Simplicity A.integrity B.isolation C.durability D.consistency


    正确答案：B,B,A,C,A

  • 第3题：

    Given an EL function foo， in namespace func， that requires a long as a parameter and returns a Map， which two are valid invocations of function foo？（）

    • A、 ${func（1）}
    • B、 ${foo：func（4）}
    • C、 ${func：foo（2）}
    • D、 ${foo（5）：func}
    • E、 ${func：foo（“easy”）}
    • F、 ${func：foo（“3”）.name}

    正确答案:F

  • 第4题：

    Given an EL function declared with：11.  12.spin 13.com.example.Spinner 14. 15.java.lang.String spinIt（） 16. 17. Which two are true？（）

    • A、The function method must have the signature： public String spin（）.
    • B、The method must be mapped to the logical name "spin" in the web.xml file.
    • C、The function method must have the signature： public String spinIt（）.
    • D、The function method must have the signature public static String spin（）.
    • E、The function method must have the signature： public static String spinIt（）.
    • F、The function class must be named Spinner， and must be in the package com.example.

    正确答案:E,F

  • 第5题：

    You want to create a filter for your web application and your filter will implement javax.servlet.Filter. Which two statements are true？（）

    • A、Your filter class must implement an init method and a destroy method.
    • B、Your filter class must also implement javax.servlet.FilterChain.
    • C、When your filter chains to the next filter， it should pass the same arguments it received in its doFiltermethod.
    • D、The method that your filter invokes on the object it received that implements javax.servlet.FilterChaincan invoke either another filter or a servlet.
    • E、Your filter class must implement a doFilter method that takes， among other things， anHTTPServletRequest object and an HTTPServletResponse object.

    正确答案:A,D

  • 第6题：

    Evaluate the following function code：   CREATE FUNCTION get_dept_avg（dept_id NUMBER） RETURN NUMBER RESULT_CACHE RELIES_ON （EMPLOYEES） IS avgsal NUMBER（6）； BEGIN  SELECT AVG（SALARY）INTO avgsal FROM EMPLOYEES   WHERE DEPARTMENT_ID = dept_id； RETURN avgsal； END get_dept_avg；   Which statement is true regarding the above function？（）

    • A、 The cached result becomes invalid when any structural change is done to the EMPLOYEES table. 
    • B、 If the function execution results in an unhandled exception，the exception result is also stored in the cache.
    • C、 Each time the function is invoked in a different session，the current result in the result cache gets overwritten.
    • D、 If the function is invoked with a different parameter value，the existing result in the result cache gets overwritten by the latest value.

    正确答案:A

  • 第7题：

    You are creating a Windows application for graphical image processing by using the .NET Framework 3.5. You create an image processing function and a delegate.You plan to invoke the image processing function by using the delegate.You need to ensure that the calling thread meets the following requirements：  （1）It is not blocked when the delegate is running   （2）It is notified when the delegate is complete What should you do？（）

    • A、Call the Invoke method of the delegate.
    • B、Call the BeginInvoke and EndInvoke methods of the delegate in the calling thread.
    • C、Call the BeginInvoke method by specifying a callback method to be executed when the delegate is complete.Call the EndInvoke method in the callback method.
    • D、Call the BeginInvoke method by specifying a callback method to be executed when the delegate is complete.Call the EndInvoke method of the delegate in the calling thread.

    正确答案:C

  • 第8题：

    单选题
    You are creating a Windows application for graphical image processing by using the .NET Framework 3.5. You create an image processing function and a delegate.You plan to invoke the image processing function by using the delegate.You need to ensure that the calling thread meets the following requirements：  （1）It is not blocked when the delegate is running   （2）It is notified when the delegate is complete What should you do？（）
    A

    Call the Invoke method of the delegate.

    B

    Call the BeginInvoke and EndInvoke methods of the delegate in the calling thread.

    C

    Call the BeginInvoke method by specifying a callback method to be executed when the delegate is complete.Call the EndInvoke method in the callback method.

    D

    Call the BeginInvoke method by specifying a callback method to be executed when the delegate is complete.Call the EndInvoke method of the delegate in the calling thread.


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement is true regarding the COALESCE function?（）
    A

    It can have a maximum of five expressions in a list 

    B

    It returns the highest NOT NULL value in the list for all rows 

    C

    It requires that all expressions in the list must be of the same data type 

    D

    It requires that at least one of the expressions in the list must have a NOT NULL value


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    The following parameter are set for your Oracle 12c database instance: OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES=FALSE OPTIMIZER_USE_SQL_PLAN_BASELINES=TRUE You want to manage the SQL plan evolution task manually. Examine the following steps: 1. Set the evolve task parameters. 2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK function. 3. Implement the recommendations in the task by using the DBMS_SPM.IMPLEMENT_EVOLVE_TASK function. 4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK function. 5. Report the task outcome by using the DBMS_SPM.REPORT_EVOLVE_TASK function. Identify the correct sequence of steps:（）
    A

    2，4，5

    B

    2，1，4，3，5

    C

    1，2，3，4，5

    D

    1，2，4，5


    正确答案： D
    解析： 暂无解析

  • 第11题：

    多选题
    Given an EL function foo， in namespace func， that requires a long as a parameter and returns a Map，which two are valid invocations of function foo？（）
    A

    ${func（1）}

    B

    ${foo：func（4）}

    C

    ${func：foo（2）}

    D

    ${foo（5）：func}

    E

    ${func：foo（easy）}

    F

    ${func：foo（3）.name}


    正确答案： D,E
    解析： 暂无解析

  • 第12题：

    单选题
    Given an EL function foo， in namespace func， that requires a long as a parameter and returns a Map， which two are valid invocations of function foo？（）
    A

     ${func（1）}

    B

     ${foo：func（4）}

    C

     ${func：foo（2）}

    D

     ${foo（5）：func}

    E

     ${func：foo（“easy”）}

    F

     ${func：foo（“3”）.name}


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Bob, a support technician, is trying to locate a particular registry key using REGEDIT.EXE, on aWindows 2000 PC. Which of the following is the BEST method of doing this?()

    A. Use the import function from the File menu.

    B. Use the find function in the Edit menu.

    C. Use the display binary data function in the View menu.

    D. Navigate through the registry sub-trees.


    参考答案：B

  • 第14题：

    Phatic communication refers to( ).

    A.language’s function of the expression of identity
    B.social interaction of language
    C.language′s function of expressing it self
    D.sociological use of language

    答案：B
    解析：
    语言学基本概念。Phatic Communion(交际性谈话)指的是语言的社会交际功能。例如，我们径常说一些诸如God bless you！等礼节性的寒暄之语。

  • 第15题：

    A developer wants too use EL to invoke a function using S{my：bloof（“foof”）}. Which is always true？（）

    • A、 The method invoked by this function must be statie.
    • B、 The function class must implement the Function interface.
    • C、 The expression is NOT a valid EL expression for invoking a function.
    • D、 The function must be declared in a web.xml file using the  element.
    • E、 The function class must have a method with the signature：Void bloof （java.lang.Strings）

    正确答案:A

  • 第16题：

    Which two statements are true about using the isUserInRole method to implement security in a Java EEapplication？（）

    • A、It can be invoked only from the doGet or doPost methods.
    • B、It can be used independently of the getRemoteUser method.
    • C、Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
    • D、Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.

    正确答案:B,C

  • 第17题：

    Which statement is true regarding the COALESCE function?（）

    • A、It can have a maximum of five expressions in a list 
    • B、It returns the highest NOT NULL value in the list for all rows 
    • C、It requires that all expressions in the list must be of the same data type 
    • D、It requires that at least one of the expressions in the list must have a NOT NULL value

    正确答案:C

  • 第18题：

    如果你想要自动加载类，下面哪种函数声明是正确的？（）

    • A、function autoload（$class_name）
    • B、function__autoload（$class_name，$file）
    • C、function__autoload（$class_name）
    • D、function_autoload（$class_name）
    • E、function autoload（$class_name，$file）

    正确答案:C

  • 第19题：

    You are implementing an ASP.NET MVC 2 Web application that contains the following class.  Public Class DepartmentControllerInherits Controller   Shared departments As List（Of Department） =  New List（Of Department）   Function Index（） As ActionResultReturn View（departments）End Function   Function Details（ByVal id As Integer） As ActionResultReturn View（departments.Find（Function（x） x.ID = id））End Function   Function ListEmployees（ByVal d As Department） As ActionResultDim employees As List（Of Employee） = GetEmployees（d）Return View （employees）End FunctionEnd Class  You create a strongly typed view that displays details for a Department instance. You want the view to also include a listing of department employees.  You need to write a code segment that will call the ListEmployees action method and output the results in place. Which code segment should you use？（）

    • A、<%= Html.Action("ListEmployees", Model) %> 
    • B、<%= Html.ActionLink("ListEmployees", "Department", "DepartmentController") %> 
    • C、<% Html.RenderPartial("ListEmployees", Model) %>
    • D、<%= Html.DisplayForModel("ListEmployees") %>

    正确答案:A

  • 第20题：

    多选题
    Given an EL function declared with：11.  12.spin 13.com.example.Spinner 14. 15.java.lang.String spinIt（） 16. 17. Which two are true？（）
    A

    The function method must have the signature： public String spin（）.

    B

    The method must be mapped to the logical name spin in the web.xml file.

    C

    The function method must have the signature： public String spinIt（）.

    D

    The function method must have the signature public static String spin（）.

    E

    The function method must have the signature： public static String spinIt（）.

    F

    The function class must be named Spinner， and must be in the package com.example.


    正确答案： B,F
    解析： 暂无解析

  • 第21题：

    单选题
    You are implementing an ASP.NET MVC 2 Web application that contains the following class.  Public Class DepartmentControllerInherits Controller   Shared departments As List（Of Department） =  New List（Of Department）   Function Index（） As ActionResultReturn View（departments）End Function   Function Details（ByVal id As Integer） As ActionResultReturn View（departments.Find（Function（x） x.ID = id））End Function   Function ListEmployees（ByVal d As Department） As ActionResultDim employees As List（Of Employee） = GetEmployees（d）Return View （employees）End FunctionEnd Class  You create a strongly typed view that displays details for a Department instance. You want the view to also include a listing of department employees.  You need to write a code segment that will call the ListEmployees action method and output the results in place. Which code segment should you use？（）
    A

    <%= Html.Action(ListEmployees, Model) %> 

    B

    <%= Html.ActionLink(ListEmployees, Department, DepartmentController) %> 

    C

    <% Html.RenderPartial(ListEmployees, Model) %>

    D

    <%= Html.DisplayForModel(ListEmployees) %>


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Evaluate the following function code：   CREATE FUNCTION get_dept_avg（dept_id NUMBER） RETURN NUMBER RESULT_CACHE RELIES_ON （EMPLOYEES） IS avgsal NUMBER（6）； BEGIN  SELECT AVG（SALARY）INTO avgsal FROM EMPLOYEES   WHERE DEPARTMENT_ID = dept_id； RETURN avgsal； END get_dept_avg；   Which statement is true regarding the above function？（）
    A

     The cached result becomes invalid when any structural change is done to the EMPLOYEES table. 

    B

     If the function execution results in an unhandled exception，the exception result is also stored in the cache.

    C

     Each time the function is invoked in a different session，the current result in the result cache gets overwritten.

    D

     If the function is invoked with a different parameter value，the existing result in the result cache gets overwritten by the latest value.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Bob, a support technician, is trying to locate a particular registry key using REGEDIT.EXE, on aWindows 2000 PC. Which of the following is the BEST method of doing this?（）
    A

    Use the import function from the File menu.

    B

    Use the find function in the Edit menu.

    C

    Use the display binary data function in the View menu.

    D

    Navigate through the registry sub-trees.


    正确答案： A
    解析： 暂无解析

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