Start Quiz: Java Certification Questions

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Title: Oracle Certified Professional Java Programmer

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Author: JavaChamp Team Senior Java Developer Germany

Created: 3 years

Access: Registered Instant Grading

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OCJP Oracle Certified Professional, Java SE 6 Programmer mock exams,

Formally SCJP Sun Certified Java Programmer Exams

Java Programming Language

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Sample Questions from the Oracle Certified Professional Java Programmer Quiz

Question: Which of the following methods can be invoked by an object of Pattern class?

Choices:

compile

matches

group

toString

Question: What is the result of compiling and running the following code?

Choices:

true

false

Question: Which of the statements would evaluate to true?

Choices:

stmt1

stmt2

stmt3

stmt4

stmt5

Question: What is the result of compiling and running the following program?

Choices:

Compilation error

falsefalsetruetrue

truetruetruetrue

truefalsetruetrue

Question: What is the result of compiling and running the following code?

Choices:

"AB" will be printed

"A" will be printed followed be a NullPointerException thrown

"B" will be printed

No output is produced

Question: What is the expected output?

Choices:

true

false

Question: What is the expected output?

Choices:

RuntimeException is thrown because of the first print statement

RuntimeException is thrown because of the second print statement

nullnullnullnull

nullnull

compilation error

Question: Select the common methods, which are defined for both type String and type StringBuffer ?

Choices:

toString()

length()

append(String)

trim()

equals(Object)

Question: What is the expected output?

Choices:

true

false

Question: Which of the statements will evaluate to true?

Choices:

stmt1

stmt2

stmt3

stmt4

Question: What is the result of compiling and running the following code?

Choices:

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No output is produced

Compilation error

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