Oracle 1z1-819 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1z1-819
Exam Name/Title: Java SE 11 Developer
Certification Provider: Oracle
Corresponding Certification: Oracle Java SE

Exam Questions: 297
Updated On: Jul 15, 2026

Question #28

Given:

What is the output?

A. 100

B. Exception

C. 300

D. 200

Discussion 0

Correct Answer: C Vote an answer

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Question #29

Given the code fragment:

Which can replace line 11?

A. UnaryOperator<Interger >uo = (int x) -> x * 3;

B. UnaryOperator<Interger > uo = (var x ) -> (x * 3);

C. UnaryOperator<Interger >uo = x -> { return x * 3; };

D. UnaryOperator<Interger >uo = var x -> { return x 3 ; };

Discussion 0

Correct Answer: B Vote an answer

Question #30

Which two statements are true about Java modules? (Choose two.)

A. Any named module can directly access all classes in an automatic module.

B. Classes found in -classpath are part of an unnamed module.

C. Modular jars loaded from -classpath are automatic modules.

D. If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

E. Modular jars loaded from --module-path are automatic modules.

Discussion 0

Correct Answer: B,E Vote an answer

Question #31

Given:

When is the readObject method called?

A. before this object Is serialized

B. before this object is deserialized

C. The method is never called.

D. after this object is serialized

E. after this object is deserialized

Discussion 0

Correct Answer: E Vote an answer

Question #32

Given:

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

A. final void methodE();

B. final void methodG(){System.out.println("G");}

C. public String methodD();

D. public int x;

E. public abstract void methodB();

F. public void methodF(){System.out.println("F");}

G. private abstract void methodC();

Discussion 0

Correct Answer: C,E Vote an answer

Question #33

Given:

What is the result?

A. 0-6

B. 0-6
2-4

C. 2-4

D. 1-5
2-4

E. 1-5

F. 0-6
1-5
2-4

G. The compilation fails due to an error in line 1.

Discussion 0

Correct Answer: E Vote an answer

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Question #34

Given the code fragment:

What is the output?

A. An exception is thrown at runtime

B. 41 def 42

C. Def 42

D. Null

Discussion 0

Correct Answer: D Vote an answer

Question #35

Given:

What is the result?

A. The compilation fails.

B. Tuesday

C. TuesdayUnknown

D. WorkingUnknown

E. Unknown

F. Working

Discussion 0

Correct Answer: E Vote an answer

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Question #36

Given this enum declaration:

Examine this code:
System.out.println(Alphabet.getFirstLetter());
What code should be written at line 3 to make this code print A?

A. static String getFirstLetter() { return A.toString(); }

B. static String getFirstLetter() { return Alphabet.values()[1].toString(); }

C. final String getFirstLetter() { return A.toString(); }

D. String getFirstLetter() { return A.toString(); }

Discussion 0

Correct Answer: A Vote an answer

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