LATEST OCPJP DUMPS UPDATED JANUARY 2013

Download Latest OCPJP DUMPS 1z0-851 Updated January 2013

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Total number of Questions = 280 

Some important questions for OCPJP Certifications

QUESTION 1

Given:

1. public class TestOne {
2. public static void main (String[] args) throws Exception {
3. Thread.sleep(3000);
4. System.out.println("sleep");
5. }
6. }
What is the result?

A. Compilation fails.
B. An exception is thrown at runtime.
C. The code executes normally and prints "sleep".
D. The code executes normally, but nothing is printed.

Correct Answer: C


QUESTION 2

Given:

12. Date date = new Date();
13. df.setLocale(Locale.ITALY);
14. String s = df.format(date);
The variable df is an object of type DateFormat that has been initialized in line 11. What is the result if this code is run on December 14, 2000?

A. The value of s is 14-dic-2000.
B. The value of s is Dec 14, 2000.
C. An exception is thrown at runtime.
D. Compilation fails because of an error in line 13.

Correct Answer: D

Explanation
The method setLocale(Locale) is undefined for the type DateFormat. It should be done in line 11 like this
DateFormat df = DateFormat.getDateInstance(DateFormat.LONG, Locale.ITALY


QUESTION 3

Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object? (Choose
two.)

A. When using versions of Java technology earlier than 5.0.
B. When sharing a StringBuffer among multiple threads.
C. When using the java.io class StringBufferInputStream.
D. When you plan to reuse the StringBuffer to build more than one string.

Correct Answer: AB


QUESTION 4

Given:
1. public class Test {
2. public enum Dogs {collie, harrier, shepherd};
3. public static void main(String [] args) {
4. Dogs myDog = Dogs.shepherd;
5. switch (myDog) {
6. case collie:
7. System.out.print("collie ");
8. case default:
9. System.out.print("retriever ");
10. case harrier:
11. System.out.print("harrier ");
12. }
13. }
14.}

What is the result?

A. harrier
B. shepherd
C. retriever
D. Compilation fails.
E. retriever harrier
F. An exception is thrown at runtime.

Correct Answer: D


QUESTION 5

Given:
05. class Building { }
06. public class Barn extends Building {
07. public static void main(String[] args) {
08. Building build1 = new Building();
09. Barn barn1 = new Barn();
10. Barn barn2 = (Barn) build1;
11. Object obj1 = (Object) build1;
12. String str1 = (String) build1;
13. Building build2 = (Building) barn1;
14. }
15. }
Which is true?

A. If line 10 is removed, the compilation succeeds.
B. If line 11 is removed, the compilation succeeds.
C. If line 12 is removed, the compilation succeeds.
D. If line 13 is removed, the compilation succeeds.
E. More than one line must be removed for compilation to succeed.

Correct Answer: C


Explanation
Cannot cast from Building to String 

Download Latest OCPJP DUMPS 2013

100 IMPORTANT OCPJP QUESTION YOU MUST KNOW BEFORE TEST