Get ready to pass the 1Z0-819 Exam right now using our Oracle Java SE Exam Package [Q20-Q41]

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Get ready to pass the 1Z0-819 Exam right now using our Oracle Java SE Exam Package

A fully updated 2022 1Z0-819 Exam Dumps exam guide from training expert PrepAwayPDF

NEW QUESTION 20
Given:

Which is true?

System.out is the standard output stream. The stream is open only when System.out is called.

System.in cannot reassign the other stream.

System.out is an instance of java.io.OutputStream by default.

System.in is the standard input stream. The stream is already open.

NEW QUESTION 21
Given:

Which expression when added at line 1 will produce the output of 1.17?

float z = (float)(Math.round((float)x/y*100)/100);

float z = Math.round((int)(x/y),2);

float z = Math.round((float)x/y,2);

float z = Math.round((float)x/y*100)/(float)100;

NEW QUESTION 22
Given:

What is the result?

Good Morning, Potter

Good Night, Potter

Good Morning, Harry

Good Night, Harry

NEW QUESTION 23
Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

Only a module that requires the java.se module is permitted to require the java.sql module.

Any module that requires the java.se module does not need to require the java.sql module.

Any module that attempts to require the java.se module actually requires the java.sql module instead.

Any module that requires the java.sql module does not need to require the java.se module.

NEW QUESTION 24
Given:

Why does D cause a compilation error?

D inherits a() only from C.

D inherits a() from B and C but the return types are incompatible.

D extends more than one interface.

D does not define any method.

NEW QUESTION 25
Given:

It is required that if p instanceof Pairthen p.isValid()returns true.
Which is the smallest set of visibility changes to insure this requirement is met?

left, right, setLeft, and setRightmust be private.

setLeftand setRightmust be protected.

leftand rightmust be private.

isValidmust be public.

NEW QUESTION 26
Given:

What is the result?

Orange Juice

The compilation fails.

Orange Juice Apple Pie Lemmon Ice Raspberry Tart

The program prints nothing.

NEW QUESTION 27
Given:

What is the output?

A compilation error is thrown.

Message from Copier: Attempt00

Message from Abstract Copier: Attempt00

A runtime error is thrown.

NEW QUESTION 28
Given:

What is the result?

NEW QUESTION 29
Given:

What is the output?

I am an object array

The compilation fails due to an error in line 1.

I am an array

I am an object

NEW QUESTION 30
Given:

What is the result?

6910 3

10126 3

6104 3

NEW QUESTION 31
Given:

What is the result?

A ClassCastException is thrown at runtime.

AnotherClass#methodA()AnotherClass#methodA()

The compilation fails.

SomeClass#methodA()AnotherClass#methodA()

AnotherClass#methodA()SomeClass#methodA()

SomeClass#methodA()SomeClass#methodA()

NEW QUESTION 32
Given:

and

Which four identifiers from the Fooand Barclasses are visible at line 1? (Choose four.)

NEW QUESTION 33
Consider this method declaration:

A) “SET SESSION AUTHORIZATION ” + user
B) “SET SESSION AUTHORIZATION ” + stmt.enquoteIdentifier(user)
Is A or B the correct replacement for <EXPRESSION> and why?

A, because it sends exactly the value of user provided by the calling code.

B, because enquoting values provided by the calling code prevents SQL injection.

A and B are functionally equivalent.

A, because it is unnecessary to enclose identifiers in quotes.

B, because all values provided by the calling code should be enquoted.

NEW QUESTION 34
Given:

What is the output?

Hello world!Bonjour le monde!

Hello world!Hello world!

Bonjour le monde!Hello world!

Bonjour le monde!Bonjour le monde!

NEW QUESTION 35
Which code is correct?

Runnable r = “Message” > System.out.println();

Runnable r = () > System.out::print;

Runnable r = () -> {System.out.println(“Message”);};

Runnable r = > System.out.println(“Message”);

Runnable r = {System.out.println(“Message”)};

NEW QUESTION 36
Given:

Which two are correct? (Choose two.)

The output will be exactly 2 1 3 4 5.

The program prints 1 4 2 3, but the order is unpredictable.

Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.

Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.

Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.

NEW QUESTION 37
Given:

What is the result?

Good Morning, Potter

Good Night, Potter

Good Morning, Harry

Good Night, Harry

NEW QUESTION 38
Given:

And the command:
java Main Helloworld
What is the result ?

Input: Echo:

Input: Helloworld Echo: Helloworld

Input:
Then block until any input comes from System.in.

Input:
Echo: Helloworld

A NullPointerException is thrown at run time.

NEW QUESTION 39
Given:

What is the result?

nothing

0 4 9

NEW QUESTION 40
Given the contents:
MessageBundle.properties file:
message=Hello
MessageBundle_en.properties file:
message=Hello (en)
MessageBundle_US.properties file:
message=Hello (US)
MessageBundle_en_US.properties file:
message=Hello (en_US)
MessageBundle_fr_FR.properties file:
message=Bonjour
and the code fragment:
Locale.setDefault(Locale.FRANCE);
Locale currentLocale = new Locale.Builder().setLanguage(“en”).build();
ResourceBundle messages = ResourceBundle.getBundle(“MessageBundle”, currentLocale); System.out. println(messages.getString(“message”)); Which file will display the content on executing the code fragment?

MessageBundle_en_US.properties

MessageBundle_en.properties

MessageBundle_fr_FR.properties

MessageBundle_US.properties

MessageBundle.properties

NEW QUESTION 41
Given:

What is the result?

2,34,34,5

2,34,54,5

2,54,54,5

2,34,54,3

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Get ready to pass the 1Z0-819 Exam right now using our Oracle Java SE Exam Package [Q20-Q41]

The benefit in Obtaining the 1Z0-819 Exam Certification

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