[Apr 20, 2025] 1Z0-819 Exam Dumps, 1Z0-819 Practice Test Questions [Q133-Q155]

[Apr 20, 2025] 1Z0-819 Exam Dumps, 1Z0-819 Practice Test Questions

Free 1Z0-819 Study Guides Exam Questions and Answer

NEW QUESTION # 133
Given:
List<String> list1 = new ArrayList<>();
list1.add("A");
list1.add("B");
List list2 = List.copyOf(list1);
list2.add("C");
List<List<String>> list3 = List.of(list1, list2);
System.out.println(list3);
What is the result?

A. [[A, B, C], [A, B, C]]
B. [[A, B],[A, B]]
C. An exception is thrown at run time.
D. [[A, B], [A, B, C]]

Answer: C

Explanation:

NEW QUESTION # 134
Given the declaration:

Examine this code fragment:
/* Loc1 */ class ProcessOrders { ... }
Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

A. @Resource(name="Customer1", priority=100)
B. @Resource(priority=0)
C. @Resource
D. @Resource(name="Customer1")
E. @Resource(priority=100)

Answer: B,E

NEW QUESTION # 135
Which code fragment prints 100 random numbers?

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

Answer: C

NEW QUESTION # 136
Which two are functional interfaces? (Choose two.)

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

Answer: D,E

NEW QUESTION # 137
Given the code fragment:

What is the result?

A. 0
B. 1
C. 2
D. 3

Answer: C

NEW QUESTION # 138
Given:

Which would cause s to be AQCD?

A. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");
B. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");
C. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");
D. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");

Answer: B

NEW QUESTION # 139
Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

A. MyInterface1
B. MyInterface5
C. MyInterface2
D. MyInterface4
E. MyInterface3

Answer: B,C

NEW QUESTION # 140
Given an application with a main module that has this module-info.java file:

Which two are true? (Choose two.)

A. To compile without an error, the application must have at least one module in the module source path that provides an implementation of country.CountryDetails.
B. A module providing an implementation of country.CountryDetails can be compiled and added without recompiling the main module.
C. To run without an error, the application must have at least one module in the module path that provides an implementation of country.CountryDetails.
D. An implementation of country.countryDetails can be added to the main module.
E. A module providing an implementation of country.CountryDetails must have a requires main; directive in its module-info.java file.

Answer: A,E

Explanation:
Reference:
/java-9-error-not-in-a-module-on-the-module-source- path

NEW QUESTION # 141
Given:

What is the result?

A. Good Night, Potter
B. Good Morning, Potter
C. Good Night, Harry
D. Good Morning, Harry

Answer: A

Explanation:

NEW QUESTION # 142
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 not deleted.
D. /u01/work/filestore.txt is deleted.

Answer: A

Explanation:

NEW QUESTION # 143
Given the Customer table structure:
* ID Number Primary Key
* NAME Text Nullable
Given code fragment:

Which statement inserted on line 14 sets NAME column to a NULL value?

A. Stmt.setNull(2 string, class);
B. Stmt.setNull(2, null);
C. Stmt.setNull(2, java,sql. Types, VARCHAR);
D. Stmt.setNull(2, java.lang, string);

Answer: C

NEW QUESTION # 144
Given:

What is the result?

A. 2,54,54,5
B. 2,34,54,3
C. 2,34,34,5
D. 2,34,54,5

Answer: A

Explanation:

NEW QUESTION # 145
Given:

What is the result?

A. null
B. Dr. Null
C. Dr. Who
D. An exception is thrown at runtime.

Answer: A

Explanation:

NEW QUESTION # 146
Given:

What is the result?

A. The compilation fails due to an error in line 1.
B. 2-4
C. 0-6
1-5
2-4
D. 0-6
2-4
E. 1-5
F. 0-6
G. 1-5
2-4

Answer: E

Explanation:
Explanation
Graphical user interface, text, application Description automatically generated

NEW QUESTION # 147
Given:

What is the result?

A. 0
B. 1
C. 2
D. 3

Answer: D

NEW QUESTION # 148
Given:

What is known about the Sportscar class?

A. The Sportscar class inherits the setTurbo method from the superclass Automobile.
B. The Sportscar class is a superclass that has more functionality than the Automobile class.
C. The Sportscar subclass cannot override setTurbo method from the superclass Automobile.
D. The Sportscar class is a subclass of Automobile and inherits its methods.

Answer: D

NEW QUESTION # 149
Given:

What is the output?
A)

B)

C)

D)

A. option A
B. option C
C. option D
D. option B

Answer: C

NEW QUESTION # 150
Given this enum declaration:

Examine this code:
System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

A. public String toString() { return String.valueOf(v); }
B. public String toString() { return String.valueOf(Letter.values()[1]); }
C. public String toString() { return String.valueOf(ALPHA.v); }
D. String toString() { return "200"; }

Answer: A

Explanation:

NEW QUESTION # 151
Given:

What is the result?

A. Map: 0 Keys: 4 Values: 4
B. Map: 0 Keys: 0 Values: 0
C. Map: 4 Keys: 0 Values: 0
D. Map: 4 Keys: 4 Values: 4
E. The compilation fails.

Answer: C

Explanation:

NEW QUESTION # 152
Given the code fragment:

Which code fragment replaces the for statement?

A. IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);
B. IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);
C. intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);
D. IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

Answer: B

NEW QUESTION # 153
Given:

What is the result?