单选题Which retrieves the value associated with “foo” from within an HttpServlet?()A  String value = getServletConfig( ).getParameter(“foo”);B  String value = getServletContext( ).getAttribute(“foo”);C  Object value = getServletContext( ).getInitParameter

题目
单选题
Which retrieves the value associated with “foo” from within an HttpServlet?()
A

 String value = getServletConfig( ).getParameter(“foo”);

B

 String value = getServletContext( ).getAttribute(“foo”);

C

 Object value = getServletContext( ).getInitParameter(“foo”);

D

 String value = getServletContext( ).getInitParameter(“foo”)

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相似问题和答案

第1题:

public class test(  public static void main(string[]args){  string foo = args [1];  string foo = args [2];  string foo = args [3];  }  )  And command line invocation: Java Test red green blue   What is the result?()  

  • A、 Baz has the value of “”
  • B、 Baz has the value of null
  • C、 Baz has the value of “red”
  • D、 Baz has the value of “blue”
  • E、 Bax has the value of “green”
  • F、 The program throws an exception.

正确答案:F

第2题:

Given: String value = getServletContext().getInitParameter("foo"); in an HttpServlet and a web applicationdeployment descriptor that contains: foo frodo Which two are true?()

  • A、The foo initialization parameter CANNOT be set programmatically.
  • B、Compilation fails because getInitParameter returns type Object.
  • C、The foo initialization parameter is NOT a servlet initialization parameter.
  • D、Compilation fails because ServletContext does NOT have a getInitParameter method.
  • E、The foo parameter must be defined within the  element of the deployment descriptor.

正确答案:A,C

第3题:

GiventheHttpServletcode:getServletContext().setAttribute(“foo”,“value”);Whatistheresult?()

A.Theattributefooisplacedintheapplication

B.AServletContextListenerregisteredforthatservletisnotified

C.AServletAttributeListenerregisteredforthatservletisnotified

D.AnHttpSessionAttributeListenerregisteredforthatservletisnotified


参考答案:A

第4题:

Given the JSP code: <% request.setAttribute("foo", "bar"); %>and the Classic tag handler code: 5. public int doStartTag() throws JspException { 6. // insert code here 7. // return int 8. } Assume there are no other "foo" attributes in the web application. Which invocation on the pageContextobject,inserted at line 6,assigns "bar" to the variable x?()

  • A、String x = (String) pageContext.getAttribute("foo")
  • B、String x = (String) pageContext.getRequestScope("foo")
  • C、It is NOT possible to access the pageContext object from within doStartTag
  • D、String x = (String) pageContext.getRequest().getAttribute("foo")
  • E、String x = (String) pageContext.getAttribute("foo", PageContext.ANY_SCOPE)

正确答案:D

第5题:

int index = 1;   boolean test = new Boolean;   boolean foo= test [index];  What is the result?()

  • A、 Foo has the value of 0.
  • B、 Foo has the value of null.
  • C、 Foo has the value of true.
  • D、 Foo has the value of false.
  • E、 An exception is thrown.
  • F、 The code will not compile.

正确答案:D

第6题:

int index = 1;   String test = new String;   String foo = test[index];  What is the result?()

  • A、  Foo has the value “”
  • B、 Foo has the value null
  • C、 An exception is thrown
  • D、 The code will not compile

正确答案:B

第7题:

5. String foo = “base”;   6. foo.substring(0,3);   7. foo.concat(“ket”)  8.   Type the value of foo at line 8.()


正确答案:BASE

第8题:

Given:Stringvalue=getServletContext().getInitParameter("foo");inanHttpServletandawebapplicationdeploymentdescriptorthatcontains:<context-param><param-name>foo</param-name><param-value>frodo</param-value></context-param>Whichtwoaretrue?()

A.ThefooinitializationparameterCANNOTbesetprogrammatically.

B.CompilationfailsbecausegetInitParameterreturnstypeObject.

C.ThefooinitializationparameterisNOTaservletinitializationparameter.

D.CompilationfailsbecauseServletContextdoesNOThaveagetInitParametermethod.

E.Thefooparametermustbedefinedwithintheelementofthedeploymentdescriptor.


参考答案:A, C

第9题:

String foo = “blue”;  Boolean[]bar = new Boolean [1];  if (bar[0])  {  foo = “green”;  }   What is the result? () 

  • A、 Foo has the value of “”
  • B、 Foo has the value of null.
  • C、 Foo has the value of “blue”
  • D、 Foo has the value of “green”
  • E、 An exception is thrown.
  • F、 The code will not compile.

正确答案:F

第10题:

3. string foo = “ABCDE”;  4. foo.substring(3);   5. foo.concat(“XYZ”);   6.   Type the value of foo at line 6.()


正确答案:ABCDE

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