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Oracle Java SE Dumps 1Z0-819 Exam for Full Questions - Exam Study Guide
By passing the Oracle 1Z0-819 exam, candidates can demonstrate their proficiency in Java development using Java SE 11 and increase their career opportunities as a professional Java developer. Additionally, Oracle certifications are recognized globally and can help candidates gain credibility and recognition in the industry.
Oracle 1z1-819 (Java SE 11 Developer) Exam is a challenging exam that requires extensive preparation and study. It is important to have a solid understanding of Java programming concepts and to be familiar with the exam format and types of questions that you will encounter on the exam. With the right preparation and study materials, however, you can pass the exam and earn this valuable certification.
NEW QUESTION # 15
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 C
- B. Option D
- C. Option B
- D. Option A
Answer: A
NEW QUESTION # 16
Given these two classes:
And given this fragment:
Which describes the fragment?
- A. It throws IllegalMonitorStateException.
- B. It is subject to livelock.
- C. The code does not compile.
- D. It is subject to deadlock.
Answer: C
NEW QUESTION # 17
Which module-info.java is correct for a service provider for a print service defined in the PrintServiceAPI module?
module PrintServiceProvider {
- A. requires PrintServiceAPI;
exports org.printservice.spi;
}
module PrintServiceProvider { - B. requires PrintServiceAPI;
exports org.printservice.spi.Print with
com.provider.PrintService;
} - C. requires PrintServiceAPI;
provides org.printservice.spi.Print with
com.provider.PrintService;
}
module PrintServiceProvider { - D. requires PrintServiceAPI;
uses com.provider.PrintService;
}
module PrintServiceProvider {
Answer: A
NEW QUESTION # 18
Which two are valid statements?
- A.
- B.
- C.
- D.
- E.
Answer: D,E
NEW QUESTION # 19
Given:
What is the output?
- A. Bonjour le monde!Bonjour le monde!
- B. Hello world!Bonjour le monde!
- C. Bonjour le monde!Hello world!
- D. Hello world!Hello world!
Answer: C
Explanation:
NEW QUESTION # 20
Which code fragment added to line 1 enables the code to compile and print Hello Joe?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 21
Given:
Which code, when inserted at one or more marked positions, would allow classes B and C to compile?
- A. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3
- B. implements A // position 1@Override // position 2
- C. public void z() { } // position 3
- D. @Override // position 2public void z() { } // position 3
Answer: D
NEW QUESTION # 22
Assume ds is a DataSource and the EMP table is defined appropriately.
What does executing this code fragment do?
- A. throws a SQLException
- B. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', NULL)
- C. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', 'HR')
- D. inserts one row (101, 'SMITH', 'HR')
Answer: D
NEW QUESTION # 23
Given:
Which two constructors will compile and set the class field strings? (Choose two.)
- A. Option C
- B. Option D
- C. Option B
- D. Option A
- E. Option E
Answer: A,E
NEW QUESTION # 24
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 D
- B. Option B
- C. Option A
- D. Option C
Answer: A
NEW QUESTION # 25
Given:
You want to obtain the Stream object on reading the file. Which code inserted on line 1 will accomplish this?
- A. Stream<String> lines = Files.lines(INPUT_FILE_NAME);
- B. var lines = Files.lines(Paths.get(INPUT_FILE_NAME));
- C. Stream lines = Files.readAllLines(Paths.get(INPUT_FILE_NAME));
- D. var lines = Files.readAllLines(Paths.get(INPUT_FILE_NAME));
Answer: D
NEW QUESTION # 26
Given the content:
What Is the result?
A)
B)
C)
D)
E)
User Username
- A. Option
- B. Option D
- C. Option B
- D. Option A
- E. Option C
Answer: A,B
NEW QUESTION # 27
Given:
Assume the file on path does not exist. What is the result?
- A. The compilation fails.
- B. Exception
- C. /u01/work/filestore.txt is deleted.
- D. /u01/work/filestore.txt is not deleted.
Answer: A
Explanation:
NEW QUESTION # 28
Given the code fragment:
Which code fragment replaces the for statement?
- A. IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);
- B. IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);
- C. IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);
- D. intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);
Answer: A
NEW QUESTION # 29
Given:
Which loop incurs a compile time error?
- A. the loop starting line 7
- B. the loop starting line 3
- C. the loop starting line 14
- D. the loop starting line 11
Answer: C
NEW QUESTION # 30
Given:
When is the readObject method called?
- A. before this object Is serialized
- B. after this object is serialized
- C. after this object is deserialized
- D. The method is never called.
- E. before this object is deserialized
Answer: C
NEW QUESTION # 31
Given:
Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)
- A. public List<Integer> foo(TreeSet<String> m) { ... }
- B. public List<Object> foo(Set<CharSequence> m) { ... }
- C. public ArrayList<Number> foo(Set<CharSequence> m) { ... }
- D. public List<Integer> foo(Set<CharSequence> m) { ... }
- E. public List<Integer> foo(Set<String> m) { ... }
- F. public ArrayList<Integer> foo(Set<String> m) { ... }
Answer: A,C
NEW QUESTION # 32
Given:
What is the result?
- A. adf
- B. abcd
- C. abdf
- D. The compilation fails.
- E. abd
Answer: B
NEW QUESTION # 33
Given:
Why does D cause a compilation error?
- A. D extends more than one interface.
- B. D does not define any method.
- C. D inherits a() from B and C but the return types are incompatible.
- D. D inherits a() only from C.
Answer: C
NEW QUESTION # 34
Which declaration of an annotation type is legal?
@interface Author {
- A. String name() default null;
String date();
}
@interface Author { - B. String name() default "";
String date();
}
@interface Author { - C. String name();
String date default "";
} - D. String name() default "";
String date();
}
@interface Author extends Serializable { - E. String name();
String date;
}
@interface Author {
Answer: D
NEW QUESTION # 35
Given:
Which annotation should be used to remove warnings from compilation?
- A. @SuppressWarnings("all") on the main and print methods
- B. @SuppressWarnings("rawtypes") on main and @SafeVarargs on the print method
- C. @SuppressWarnings("unchecked") on main and @SafeVarargs on the print method
- D. @SuppressWarnings on the main and print methods
Answer: C
Explanation:
NEW QUESTION # 36
Given:
What is the result?
- A. [A, B, C]
followed by an exception thrown on line 11. - B. [A, B, C]
[A, B, C] - C. On line 9, an exception is thrown at run time.
- D. [A, B, C]
[A, B]
Answer: B
Explanation:
NEW QUESTION # 37
Given:
Which two method implementations are correct, when inserted independently in line 1? (Choose two.)
- A. Option D
- B. Option A
- C. Option B
- D. Option E
- E. Option C
Answer: B,D
NEW QUESTION # 38
......
Oracle 1z1-819 exam is designed to certify Java developers who are proficient in Java SE 11. Java SE 11 is the latest version of Java, and 1Z0-819 exam is designed to test developers' knowledge of the latest updates and features in Java. Passing 1Z0-819 exam demonstrates that a developer has a strong understanding of Java SE 11 and is able to use it effectively to develop high-quality applications.
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