THREE FORMATS FOR ORACLE 1Z1-819 PRACTICE TESTS

Three Formats for Oracle 1z1-819 Practice Tests

Three Formats for Oracle 1z1-819 Practice Tests

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The Oracle 1z1-819 exam covers a range of topics including Java fundamentals, object-oriented programming concepts, exceptions, concurrency, and collections, among others. It also tests candidates' ability to write code, debug and troubleshoot programs, and use various Java technologies and tools.

Oracle 1Z0-819 exam is an excellent way for Java developers to validate their skills and knowledge and enhance their career prospects. By passing 1z1-819 Exam, developers can demonstrate their proficiency in Java SE 11 and gain recognition as an Oracle Certified Professional (OCP) Java SE 11 Developer.

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Oracle Java SE 11 Developer Sample Questions (Q10-Q15):

NEW QUESTION # 10
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, java.lang, string);
  • B. Stmt.setNull(2 string, class);
  • C. Stmt.setNull(2, java,sql. Types, VARCHAR);
  • D. Stmt.setNull(2, null);

Answer: C


NEW QUESTION # 11
Given:

Which two are correct? (Choose two.)

  • A. The program prints 1 4 2 3, but the order is unpredictable.
  • B. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
  • C. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
  • D. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
  • E. The output will be exactly 2 1 3 4 5.

Answer: A,D

Explanation:


NEW QUESTION # 12
Given:

Which two are secure serialization of these objects? (Choose two.)

  • A. Declare fields transient.
  • B. Make the class abstract.
  • C. Implement only writeReplace to replace the instance with a serial proxy and not readResolve.
  • D. Implement only readResolve to replace the instance with a serial proxy and not writeReplace.
  • E. Define the serialPersistentFields array field.

Answer: D,E


NEW QUESTION # 13
There is a copyServiceAPI that has the org.copyservice. spi. Copy interface To use this service in a module, which module- info.java would be correct?
A)

B)

C)

D)

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

Answer: B


NEW QUESTION # 14
Given the code fragment:

What is the result?

  • A. The compilation fails.
  • B. ab cd ef
  • C. ad be cf
  • D. An ArrayIndexOutOfBoundsException is thrown at runtime.
  • E. abc def

Answer: C


NEW QUESTION # 15
......

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