New 2022 Realistic Free Oracle 1Z0-819 Exam Dump Questions & Answer [Q105-Q124]

Posted byadminApril 19, 2022Leave a Comment on New 2022 Realistic Free Oracle 1Z0-819 Exam Dump Questions & Answer [Q105-Q124]

Rate this post

New 2022 Realistic Free Oracle 1Z0-819 Exam Dump Questions and Answer

1Z0-819 Practice Test Engine: Try These 215 Exam Questions

For more info read reference:

1Z0-006 Official Certification Site
Oracle Cloud Learning Resources

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:

Utilize polymorphism and casting to call methods, differentiate object type versus reference type
Declare and instantiate Java objects including nested class objects, and explain objects’ – lifecycles (including creation, dereferencing by reassignment, and garbage collection)
Define and use fields and methods, including instance, static and overloaded methods
Secure resource access including filesystems, manage policies and execute privileged code
Initialize objects and their members using instance and static initialiser statements and constructors
Understand variable scopes, apply encapsulation and make objects immutable

NO.105 Which two commands are used to identify class and module dependencies? (Choose two.)

jmod describe

java Hello.java

jdeps –list-deps

jar –show-module-resolution

java –show-module-resolution

NO.106 Which code fragment represents a valid Comparatorimplementation?

NO.107 Given:

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

Option A

Option B

Option C

Option D

Option E

Option F

NO.108 Examine these module declarations:

Which two statements are correct? (Choose two.)

The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.

The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.

The Consumer module should require the ServiceProvider module.

The ServiceProvider module should export the com.myimpl package.

The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

NO.109 Given:

What is the result?

An exception is thrown at runtime.

42=(x+y)=42

42=(x+y)=6

6=(x+y)=42

6=(x+y)=6

NO.110 Given the code fragment:

What is the result?

123

NO.111 Which statement about access modifiers is correct?

An instance variable can be declared with the static modifier.

A local variable can be declared with the final modifier.

An abstract method can be declared with the private modifier.

An inner class cannot be declared with the public modifier.

An interface can be declared with the protected modifier.

NO.112 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() {

NO.113 Given the code fragment:

What is the result?

13 5 7 9

1 3 5 7 9 11

2 4 6 B 10

2 4 6 8

NO.114 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.

NO.115 Given:

What is required to make the Foo class thread safe?

No change is required.

Make the declaration of lock static.

Replace the lock constructor call with new ReentrantLock (true).

Move the declaration of lock inside the foo method.

Reference:
/how-to-make-java-class-thread-safe

NO.116 Given:

What is the result?

The compilation fails.

1.99,2.99,0

1.99,2.99,0.0

1.99,2.99

NO.117 Given:

Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

@Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3

@Override // position 2public void z() { } // position 3

implements A // position 1@Override // position 2

public void z() { } // position 3

NO.118 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

NO.119 Given:

When is the readObject method called?

before this object is deserialized

after this object is deserialized

before this object Is serialized

The method is never called.

after this object is serialized

NO.120 Analyze the code:

Which two options can you insert inside println method to produce Global:namescope? (Choose two.)

Test.prefix+Test.name

new Test().prefix+new Test().name

Test.prefix+Test.getName()

Test.getName+prefix

prefix+Test.name

prefix+name

NO.121 Given:

What is the result?

Good Morning, Potter

Good Night, Potter

Good Morning, Harry

Good Night, Harry

NO.122 Given:

and

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

NO.123 Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?

after line 8

after line 6

after line 5

after line 10

NO.124 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?