Download Upgrade to Java SE 8 OCP.1z0-813.Prep4Sure.2018-09-05.36q.vcex

Vendor:	Oracle
Exam Code:	1z0-813
Exam Name:	Upgrade to Java SE 8 OCP
Date:	Sep 05, 2018
File Size:	2 MB

Download Exam

How to open VCEX files?

Files with VCEX extension can be opened by ProfExam Simulator.

Download
ProfExam Simulator

Purchase
Coupon: EXAM_HUB

Discount: 20%

Demo Questions

Given:

and the code fragment:

What is the result?

A compilation error occurs.
2000.0
1500.0
0.0

Correct answer: A

Explanation:

The line mapToInt(Person::GetSalary) will cause a compile error.If it is replaced by the following line, a "." is added in the beginning of the line, the result would be 1500.0:.mapToInt(Person::getSalary)

The line mapToInt(Person::GetSalary) will cause a compile error.

If it is replaced by the following line, a "." is added in the beginning of the line, the result would be 1500.0:

.mapToInt(Person::getSalary)

Which two codes correctly represent a standard language locale code? (Choose two.)

Correct answer: BC

Explanation:

Language codes use lowercase. The following examples create Locale objects for the French language in Canada, the English language in the U.S. and Great Britain. aLocale = new Locale("fr", "CA"); bLocale = new Locale("en", "US"); cLocale = new Locale("en", "GB"); Reference: https://docs.oracle.com/javase/tutorial/i18n/locale/create.html

Language codes use lowercase.

The following examples create Locale objects for the French language in Canada, the English language in the U.S. and Great Britain.

aLocale = new Locale("fr", "CA");

bLocale = new Locale("en", "US");

cLocale = new Locale("en", "GB");

Reference: https://docs.oracle.com/javase/tutorial/i18n/locale/create.html

Given the code fragment:

What is the result?

Word: why what when
Words: why Word: Why what Word: why what when
Word: why Word: what Word: when
Compilation fails.

Correct answer: A

Given the code fragment:

If exceptions occur when closing the FileWriter object and when retrieving the JString class object, which exception object is propagated up to the caller of the processFile method?

java.lang.Exception
java.io.IOException
java.lang.ClassNotFoundException
java.lang.NoSuchClassException

Correct answer: C

Explanation:

ClassNotFoundException is thrown when an application tries to load in a class through its string name using:The forName method in class Class. The findSystemClass method in class ClassLoader . The loadClass method in class ClassLoader. but no definition for the class with the specified name could be found. References: https://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html

ClassNotFoundException is thrown when an application tries to load in a class through its string name using:

The forName method in class Class.
The findSystemClass method in class ClassLoader .
The loadClass method in class ClassLoader.

but no definition for the class with the specified name could be found.

References: https://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html

Given:

What is the result when you compile the code and execute the command:

java MyApp kava

kava
Kava
kawa
Kawa
An exception is thrown at runtime.

Correct answer: D

Given the code fragment:

and

Which code fragment could you see to refactor the code from line 4 to 8 to use a Lambda expression?

Vehicle v = new Vehicle(int speed) { System.out.print(“Fly at “ + speed); );
Vehicle v = int speed -> System.out.print(“Fly at “ + speed);
Vehicle v = (int speed) -> System.out.print(“Fly at “ + speed);
Vehicle v = speed -> {System.out.print(“Fly at “ + speed) };

Correct answer: C

Given the code fragment:

What is the result?

0 0
1 2
1 4
A compilation error occurs

Correct answer: D

Explanation:

A compilation error will occur at the following line:map.compute("1", (k, v) -> (v == null) ? k * k : 0 );The error is:Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - bad operand types for binary operator '*'first type: java.lang.Stringsecond type: java.lang.String

A compilation error will occur at the following line:

map.compute("1", (k, v) -> (v == null) ? k * k : 0 );

The error is:

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - bad operand types for binary operator '*'

first type: java.lang.String

second type: java.lang.String

Given the incomplete pseudo-code for a fork/join framework application:

And given the missing methods:

process, submit, and splitInHalf

Which three insertions properly complete the pseudo-code? (Choose three.)

Insert process at line Z.
Insert process at line X.
Insert submit at line X.
Insert splitInHalf at line X.
Insert process at line Y.
Insert splitInHalf at line Y.
Insert submit at line Z.

Correct answer: BFG

Explanation:

B: If the size is small enough then process the work.D: If the size is not small enough then slit up the wok in half.G: Submit the two split up pieces of work recursively.Note: Your code should look similar to the following pseudocode: Reference: https://docs.oracle.com/javase/tutorial/essential/concurrency/forkjoin.html

B: If the size is small enough then process the work.

D: If the size is not small enough then slit up the wok in half.

G: Submit the two split up pieces of work recursively.

Note: Your code should look similar to the following pseudocode: