Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:
1. One of the use cases in your web application uses many session-scoped attributes. At the end of the use case, you want to clear out this set of attributes from the session object. Assume that this static variable holds this set of attribute names:
201.
private static final Set<String> USE_CASE_ATTRS;
202.
static {
203.
USE_CASE_ATTRS.add("customerOID");
204.
USE_CASE_ATTRS.add("custMgrBean");
205.
USE_CASE_ATTRS.add("orderOID");
206.
USE_CASE_ATTRS.add("orderMgrBean");
207.
}
Which code snippet deletes these attributes from the session object?
A) for ( String attr : USE_CASE_ATTRS ) {
session.remove(attr);
}
B) session.removeAll(USE_CASE_ATTRS);
C) session.deleteAllAttributes(USE_CASE_ATTRS);
D) for ( String attr : USE_CASE_ATTRS ) {
session.removeAttribute(attr);
}
E) for ( String attr : USE_CASE_ATTRS ) {
session.deleteAttribute(attr);
}
2. Given:
11.
<% java.util.Map map = new java.util.HashMap();
12.
request.setAttribute("map", map);
13.
map.put("a", "true");
14.
map.put("b", "false");
15.
map.put("c", "42"); %>
Which three EL expressions are valid and evaluate to true? (Choose three.)
A) ${map.false or map.true}
B) ${map.a and map.b or map.a}
C) ${map.a and map.d}
D) ${map.d or map.a}
E) ${not map.c}
F) ${map['true'] or map['false']}
3. The sl:shoppingList and sl:item tags output a shopping list to the response and are used as follows:
11.
<sl:shoppingList>
12.
<sl:item name="Bread" />
13.
<sl:item name="Milk" />
14.
<sl:item name="Eggs" />
15.
</sl:shoppingList>
The tag handler for sl:shoppingList is ShoppingListTag and the tag handler for sl:item is ItemSimpleTag.
ShoppingListTag extends BodyTagSupport and ItemSimpleTag extends SimpleTagSupport.
Which is true?
A) ShoppingListTag can find the child instances of ItemSimpleTag by calling getChildren() on the PageContext and casting each to an ItemSimpleTag.
B) It is impossible for ItemSimpleTag and ShoppingListTag to find each other in a tag hierarchy because one is a Simple tag and the other is a Classic tag.
C) ItemSimpleTag can find the enclosing instance of ShoppingListTag by calling findAncestorWithClass() on the PageContext and casting the result to ShoppingListTag.
D) ShoppingListTag can find the child instances of ItemSimpleTag by calling super.getChildren() and casting each to an ItemSimpleTag.
E) ItemSimpleTag can find the enclosing instance of ShoppingListTag by calling getParent() and casting the result to ShoppingListTag.
4. Click the Exhibit button.
Assuming the tag library in the exhibit is imported with the prefix forum, which custom tag invocation produces a translation error in a JSP page?
A) <forum:message subject="My Subject">
My message body.
</forum:message>
B) <forum:message from="My Name" subject="My Subject" />
C) <forum:message from="My Name" subject="${param.subject}">
${param.body}
</forum:message>
D) <forum:message from="My Name" subject="My Subject">
<%= request.getParameter( "body" ) %>
</forum:message>
E) <forum:message from="My Name"
subject="<%= request.getParameter( "subject" ) %>">
My message body.
</forum:message>
5. Which two actions protect a resource file from direct HTTP access within a web application? (Choose two.)
A) placing it in the /META-INF/secure directory
B) placing it in the /WEB-INF directory
C) creating a <web-resource> element within the deployment descriptor
D) placing it in the /secure directory
E) creating a <secure-resource> element within the deployment descriptor
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B,D,E | Question # 3 Answer: E | Question # 4 Answer: D | Question # 5 Answer: A,B |
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