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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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