Download Free Oracle 1Z0-819 Exam Questions & Answer [Q89-Q107]

Download Free Oracle 1Z0-819 Exam Questions & Answer 

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Difficulty in Attempting Java SE 11 Developer Exam Number: 1Z0-819

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Questions in the certification examination are based on the real-world scenarios and cater to the real-time problems implementation difficulties, hence along with all the training material and tutorial it is of utmost importance for the candidate to possess practical knowledge and experience of working in the field of Java technology.

NEW QUESTION 89
Given the code fragment:

You want to display the value of currency as $100.00.
Which code inserted on line 1 will accomplish this?

 NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();

 NumberFormat formatter = NumberFormat.getCurrency(locale);

 NumberFormat formatter = NumberFormat.getInstance(locale);

 NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);

NEW QUESTION 90
Given the code fragment:

What is the result?

 An ArrayIndexOutofBoundsException is thrown at runtime.

 The compilation fails.

 gh ij kl

 gj hk il

 ghi jkl

NEW QUESTION 91
Given:

Which three are true? (Choose three.)

 b1.foo(c) prints Bonjour le monde!

 f1.foo(c) prints Hello world!

 f1.foo(c) prints Ola Mundo!

 b1.foo(c) prints Hello world!

 f2.foo(c) prints Ola Mundo!

 b1.foo(c) prints Ola Mundo!

 f2.foo(c) prints Bonjour le monde!

 f2.foo(c) prints Hello world!

 f1.foo(c) prints Bonjour le monde!

NEW QUESTION 92
Given:

Which two changes need to be made to make this class compile? (Choose two.)

 Change Line 1 to an abstract class:public abstract class API {

 Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;

 Change Line 1 to a class:public class API {

 Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {

 Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;

NEW QUESTION 93
Given:

What is the result?

 Map: 0 Keys: 0 Values: 0

 The compilation fails.

 Map: 4 Keys: 4 Values: 4

 Map: 4 Keys: 0 Values: 0

 Map: 0 Keys: 4 Values: 4

NEW QUESTION 94
Which two are functional interfaces? (Choose two.)

 Option A

 Option B

 Option C

 Option D

 Option E

NEW QUESTION 95
Given the code fragment:

Which “for” loop produces the same output?

 Option A

 Option B

 Option C

 Option D

NEW QUESTION 96
Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

 The compilation fails because there is no zero args constructor defined in class X.

 The compilation fails because either class X or class Y needs to implement the toString() method.

 The compilation fails because a final class cannot extend another class.

 The compilation succeeds.

NEW QUESTION 97
Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

 In Line 1, change the access modifier to privateprivate Person() {

 In Line 1, change the access modifier to publicpublic Person() {

 In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();

 In Line 2, change the access modifier to protectedprotected class Main {

 In Line 1, remove the access modifierPerson() {

NEW QUESTION 98
Given:

What is the result?

 2,34,34,5

 2,34,54,5

 2,54,54,5

 2,34,54,3

NEW QUESTION 99
Given the code fragment:

What is the result?

 A java.lang, UnsupportedOperationException is thrown.

 True

 False

 A java.lang.NullPointerException is thrown.

NEW QUESTION 100
Which two statements correctly describe capabilities of interfaces and abstract classes? (Choose two.)

 Interfaces cannot have protected methods but abstract classes can.

 Both interfaces and abstract classes can have final methods.

 Interfaces cannot have instance fields but abstract classes can.

 Interfaces cannot have static methods but abstract classes can.

 Interfaces cannot have methods with bodies but abstract classes can.

NEW QUESTION 101
Given:

What is the result?

 42

 The compilation fails due to an error in line 4.

 17

 The compilation fails due to an error in line 3.

 The compilation fails due to an error in line 2.

 The compilation fails due to an error in line 1.

 The compilation fails due to an error in line 5.

NEW QUESTION 102
Given:

What is the result?

 4

 3

 An exception is thrown at runtime.

 5

NEW QUESTION 103
Given:

A) An exception is thrown at run time.
B)

C) The compilation fails due to an error on line 2.
D) The compilation fails due to an error on line 1.
E)

F)
The compilation fails due to an error on line 3.

 Option A

 Option B

 Option C

 Option D

 Option E

 Option F

NEW QUESTION 104
Given:

What is the result?

 The compilation fails.

 Y@<< hashcode>>

 Null

 HH

NEW QUESTION 105
Given:

Which two are secure serialization of these objects? (Choose two.)

 Define the serialPersistentFields array field.

 Declare fields transient.

 Implement only readResolve to replace the instance with a serial proxy and not writeReplace.

 Make the class abstract.

 Implement only writeReplace to replace the instance with a serial proxy and not readResolve.

NEW QUESTION 106
Given:

Which two method implementations are correct, when inserted independently in line 1? (Choose two.)

 Option A

 Option B

 Option C

 Option D

 Option E

NEW QUESTION 107
Given:

Which three classes successfully override printOne()? (Choose three.)

 Option A

 Option B

 Option C

 Option D

 Option E

 Option F

 Loading …

Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

• Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
• Use local variable type inference, including as lambda parameters
• Handle text using String and StringBuilder classes

1Z0-819 Exam Dumps For Certification Exam Preparation: https://www.test4engine.com/1Z0-819_exam-latest-braindumps.html