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Oracle 1Z0-858 Exam Syllabus Topics:

Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

1. You web application uses a lot of Java enumerated types in the domain model of the application. Built into each enum type is a method, getDisplay(), which returns a localized, user-oriented string. There are many uses for presenting enums within the web application, so your manager has asked you to create a custom tag that iterates over the set of enum values and processes the body of the tag once for each value; setting the value into a page-scoped attribute called, enumValue. Here is an example of how this tag is used:
10.
<select name='season'>
11.
<t:everyEnum type='com.example.Season'>
12.
<option value='${enumValue}'>${enumValue.display}</option>
13.
</t:everyEnum>
14.
</select>
You have decided to use the Simple tag model to create this tag handler.
Which tag handler method will accomplish this goal?

A) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
pageContext.setAttribute("enumValue", value);
getJspBody().invoke(getOut());
}
} (Exception e) { throw new JspException(e); }
}
B) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
pageContext.setAttribute("enumValue", value);
getJspBody().invoke(getJspContext().getWriter());
}
} (Exception e) { throw new JspException(e); }
}
C) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
getJspContext().setAttribute("enumValue", value);
getJspBody().invoke(null);
}
} (Exception e) { throw new JspException(e); }
}
D) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
getJspContext().setAttribute("enumValue", value);
getJspBody().invoke(getJspContext().getWriter());
}
} (Exception e) { throw new JspException(e); }
}

2. Which two are required elements for the <web-resource-collection> element of a web application deployment descriptor? (Choose two.)

A) <url-pattern>
B) <web-resource-name>
C) <realm-name>
D) <description>
E) <transport-guarantee>

3. The Squeaky Bean company has decided to port their web application to a new J2EE 1.4 container. While reviewing the application, a developer realizes that in multiple places within the current application, nearly duplicate code exists that finds enterprise beans. Which pattern should be used to eliminate this duplicate code?

A) Intercepting Filter
B) Front Controller
C) Transfer Object
D) Service Locator
E) Model-View-Controller
F) Business Delegate

4. Given:
1.<% int[] nums = {42,420,4200};
2.request.setAttribute("foo", nums); %>
3.${5 + 3 lt 6}
4.${requestScope['foo'][0] ne 10 div 0}
5.${10 div 0}
What is the result?

A) true true
B) false true
C) false true 0
D) false true Infinity
E) An exception is thrown.
F) Compilation or translation fails.
G) true true Infinity

5. You need to store a floating point number, called Tsquare, in the session scope. Which two code snippets allow you to retrieve this value? (Choose two.)

A) float Tsquare = ((Float) session.getFloatAttribute.("Tsquare")).floatValue;
B) float Tsquare = (Float) session.getAttribute("Tsquare");
C) float Tsquare = session.getFloatAttribute("Tsquare");
D) float Tsquare = ((Float) session.getNumericAttribute.("Tsquare")).floatValue;
E) float Tsquare = (float) session.getNumericAttribute("Tsquare");
F) float Tsquare = ((Float) session.getAttribute.("Tsquare")).floatValue();

Solutions: