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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps pdf:

Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
Use a Java array and List, Set, Map and Deque collections, including convenience methods

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Oracle Java SE 11 Developer Sample Questions (Q240-Q245):

NEW QUESTION # 240
Which two statements are correct about try blocks? (Choose two.)

A. A finally block in a try-with-resources statement executes before the resources declared are closed.
B. A try block can have more than one catch block.
C. A try block must have a catch block and a finally block.
D. A finally block must be immediately placed after the try or catch blocks.
E. catch blocks must be ordered from generic to specific exception types.

Answer: B,D

NEW QUESTION # 241
Given:

Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)

A. tCount = tCount;
B. cCount = setCCount(c);
C. setCCount(c) = cCount;
D. aCount = a;
E. setGCount(g);

Answer: A,D

NEW QUESTION # 242
Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

A. Only a module that requires the java.se module is permitted to require the java.sql module.
B. Any module that requires the java.se module does not need to require the java.sql module.
C. Any module that attempts to require the java.se module actually requires the java.sql module instead.
D. Any module that requires the java.sql module does not need to require the java.se module.

Answer: A

NEW QUESTION # 243
Given:

Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

A. public void z() { } // position 3
B. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3
C. @Override // position 2public void z() { } // position 3
D. implements A // position 1@Override // position 2

Answer: C

NEW QUESTION # 244
Given:

Which statement is true about the Fox class?

A. Fox class must provide implementation for the inhabit method.
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 does not have to override the inhabit method if Forest and Town provide compatible implementations.

Answer: E

NEW QUESTION # 245
......

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