Interview Questions

1. 1.What is the main purpose of using EL?

Options:

a. To remove XML from JSP pages

b. To remove standard actions from JSP pages

c. To remove Java syntax from JSP pages

d. To remove complexity from JSP pages

Reveal Answer

2. 2.You can use EL alongside Java scripting elements?

Options:

a. true

b. false

Reveal Answer

3. 3.EL expressions are always evaluated from right to leftt.?

Options:

a. true

b. false

Reveal Answer

4. 4.Which of the following is an invalid EL identifer?

Options:

a. amy1

b. $amy1

c. *amy1

d. _amy1

Reveal Answer

5. 5.Which of the following is a reserved word and so can't be used as an EL identifer?

Options:

a. empty

b. erase

c. error

d. evoke

Reveal Answer

6. 6.What will be the output from the following expression? <% request.setAttribute("a", 15); request.setAttribute("b", 6); %> ${a%b}

Options:

a. 0

b. 3

c. -3

d. 9

e. -9

Reveal Answer

7. 7.When using the Short-circuit AND (and or &&) if the first operand returns false, the second operand will not be checked?

Options:

a. true

b. False

Reveal Answer

8. 8.When using the Short-circuit OR (or or ||) if the first operand returns true, the second operand will not be checked?

Options:

a. true

b. false

Reveal Answer

9. 9.What will be the output from the following expression? ${empty ""}

Options:

a. an exception will be thrown

b. null

c. true

d. false

Reveal Answer

10. 10. What will be the output from the following conditional operator? <% request.setAttribute("a", 6); request.setAttribute("b", 15); %> ${(requestScope.a lt requestScope.b)? "lower number" : "higher number"}

Options:

a. nothing

b. null

c. lower number

d. higher number

Reveal Answer

11. 11.Which operator has the highest precedence?

Options:

a. empty

b. instanceof

c. mod

d. not

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12. 12.The . operator can be used to access JavaBeans and what other type of object?

Options:

a. Array

b. java.util.List

c. java.util.Map

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13. 13.The first named variable (before the . operator) is either an attribute within one of the four scopes or what.?

Options:

a. A collection

b. An array

c. EL implicit object

d. JavaBean

Reveal Answer

14. 14. Which type of property access operator allows us to use non-conforming Java identifers?

Options:

a. . operator

b. [] operator

c. neither

d. both

Reveal Answer

15. 15.We can access the property of an object, where that object itself has been returned as the property of another object?

Options:

a. true

b. false

Reveal Answer

16. 16.Which type of property access operator allows us to use java.util.Map objects?

Options:

a. .operator

b. [] operator

c. neither

d. both

Reveal Answer

17. 17.Which EL implicit object is not of type java.util.Map?

Options:

a. cookie

b. header

c. initParam

d. pageContext

Reveal Answer

18. 18.Using array like syntax such as ${header.accept[1]} we can access secondary header values using the header EL implicit object.?

Options:

a. true

b. false

Reveal Answer

19. 19. The initParam EL implicit object allows access to servlet initialisation parameters?

Options:

a. true

b. false

Reveal Answer

20. 20. When using the cookie EL implicit object there is no need to iterate over the javax.servlet.http.HTTPServletRequest object to get to the required name?

Options:

a. true

b. false

Reveal Answer

21. 21.How many Core tag library actions are there?

Options:

a. 14

b. 12

c. 9

d. 17

Reveal Answer

22. 22.We can use the target and property attributes of the </c:set> action to assign a new property value to any object?

Options:

a. true

b. false

Reveal Answer

23. 23.The <c:remove> tag removes a scoped object?

Options:

a. true

b. false

Reveal Answer

24. 24.What type of error object is thrown from the <c:catch> tag?

Options:

a. java.lang.Error

b. java.lang.Exception

c. java.lang.Throwable

d. Any of the above

Reveal Answer

25. 25.Which type of Java conditional statement is the <c:choose> tag similar to?

Options:

a. if

b. switch

c. when

Reveal Answer

26. 26.Which Core iterator tag allows us to iterate over the body content a set number of times?

Options:

a. <c:forEach>

b. <c:forLoop>

c. <c:forTokens>

d. <c:forWhen>

Reveal Answer

27. 27.How many XML tag library actions are there?

Options:

a. 7

b. 10

c. 8

d. 14

Reveal Answer

28. 28.Which XML attribute allows us to specify XPath expressions?

Options:

a. allow

b. select

c. transform

d. view

Reveal Answer

29. 29.The XPath expression language that is global to all JSTL actions?

Options:

a. false

b. true

Reveal Answer

30. 30.An XPath variable must reference a java.lang.Object instance in any of the supported scopes?

Options:

a. true

b. false

Reveal Answer

31. 31.XPath expression bindings are mapped differently to their EL Implicit Objects counterparts?

Options:

a. true

b. false

Reveal Answer

32. 32.What is the default value of the type attribute for the <fmt:formatNumber> and <fmt:parseNumber> actions?

Options:

a. currency

b. number

c. percentage

Reveal Answer

33. 33.When using the <fmt:formatNumber> action the numeric value to be formatted can be specified using the value attribute or when omitted read from where?

Options:

a. The value attribute is mandatory and must be specified

b. The action is ignored

c. The value attribute is treated as a null value

d. The numeric value can be read from the tag's body content

Reveal Answer

34. 34.What is the default value of the type attribute for the <fmt:formatDate> and <fmt:parseDate> actions?

Options:

a. date

b. time

c. both

Reveal Answer

35. 35.When using the <fmt:formatDate> action if the scope attribute is specfied which other attribute must also be specified?

Options:

a. pattern

b. type

c. value

d. var

Reveal Answer

36. 36.How many time zone Ii8n actions are there?

Options:

a. 1

b. 2

c. 3

d. 4

Reveal Answer

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