[Aug-2023] Pass Oracle 1Z0-819 Exam in First Attempt Guaranteed! [Q147-Q164]

[Aug-2023] Pass Oracle 1Z0-819 Exam in First Attempt Guaranteed!

Full 1Z0-819 Practice Test and 262 unique questions with explanations waiting just for you, get it now!

NEW QUESTION # 147
Given:

What is the result?

A. The compilation fails at line 8.
B. The compilation fails at line 2.
C. Hello World
D. The compilation fails at line 9.

Answer: C

Explanation:

NEW QUESTION # 148
Given:

Which code fragment on line 1 makes the m map contain the employee with the highest salary for each neighborhood?
A)

B)

C)

D)

A. Option A
B. Option C
C. Option D
D. Option B

Answer: C

NEW QUESTION # 149
Given:

Which two statements are valid to be written in this interface? (Choose two.)

A. private abstract void methodC();
B. public void methodF(){System.out.println("F");}
C. final void methodG(){System.out.println("G");}
D. public abstract void methodB();
E. public int x;
F. public String methodD();
G. final void methodE();

Answer: D,F

NEW QUESTION # 150
Given this requirement:
Module vehicle depends on module part and makes its com.vehicle package available for all other modules.
Which module-info.java declaration meets the requirement?

A. Option C
B. Option D
C. Option A
D. Option B

Answer: C

NEW QUESTION # 151
Given:

What is the result?

A. ArrayIndexOutOfBounds Exception is thrown at runtime.
B. [). o, | 1). a, | 2).]
C. [0). o, | 1). i, | 2). r]
D. The compilation fails.
[0). D, | 1). i, | 2). a]
E.

Answer: D

NEW QUESTION # 152
Given:

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

A. Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {
B. Change Line 1 to a class:public class API {
C. Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;
D. Change Line 1 to an abstract class:public abstract class API {
E. Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;

Answer: B,C

NEW QUESTION # 153
Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

A. protected void walk(){}
B. private void walk(){}
C. void walk(){}
D. public abstract void walk();
E. abstract void walk();

Answer: A,D

NEW QUESTION # 154
Given the code fragment:

What is the result?

A. The compilation fails at line 16.
B. The compilation fails at line
C. 0
D. 1
E. The compilation fails at line 13.

Answer: D

NEW QUESTION # 155
A bookstore's sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale {
private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book {
private String name;
private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

A. Option A
B. Option D
C. Option B
D. Option C

Answer: D

NEW QUESTION # 156
Which code fragment compiles?

A. Option A
B. Option C
C. Option D
D. Option B

Answer: C

Explanation:

NEW QUESTION # 157
Examine these module declarations:

Which two statements are correct? (Choose two.)

A. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
B. The ServiceProvider module should export the com.myimpl package.
C. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.
D. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
E. The Consumer module should require the ServiceProvider module.

Answer: A,E

NEW QUESTION # 158
Given:

Which statement is true about the Fox class?

A. Fox class does not have to override the inhabit method if Forest and Town provide compatible implementations.
B. The inhabit method implementation from the first interface that Fox implements will take precedence.
C. Fox class must implement either Forest or Town interfaces, but not both.
D. Fox class does not have to override inhabit method, so long as it does not try to call it.
E. Fox class must provide implementation for the inhabit method.

Answer: A

NEW QUESTION # 159
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. A, because it sends exactly the value of user provided by the calling code.
B. A and B are functionally equivalent.
C. B, because enquoting values provided by the calling code prevents SQL injection.
D. B, because all values provided by the calling code should be enquoted.
E. A, because it is unnecessary to enclose identifiers in quotes.

Answer: A

NEW QUESTION # 160
A bookstore's sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale {
private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book {
private String name;
private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

A. Option A
B. Option D
C. Option B
D. Option C

Answer: D

NEW QUESTION # 161
Your organization makes mlib.jar available to your cloud customers. While working on a new feature for mlib.jar, you see that the customer visible method public void enableService(String hostName, String portNumber) executes this code fragment

and you see this grant is in the security policy file:

What security vulnerability does this expose to your cloud customer's code?