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Exam Topic for Java SE 11 Developer Exam Number: 1Z0-819

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

• Working with Arrays and Collections
• Working with Java data types
• Annotations
• Java Platform Module System
• Java I/O API
• Database Applications with JDBC

Difficulty in Attempting Java SE 11 Developer Exam Number: 1Z0-819

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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:

• Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
• Use a Java array and List, Set, Map and Deque collections, including convenience methods
• Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
• Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
• Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
• Sort collections and arrays using Comparator and Comparable interfaces
• Use Java Streams to filter, transform and process data

Oracle Java SE 11 Developer Sample Questions (Q75-Q80):

NEW QUESTION # 75
Given:

Assuming that this code compiles correctly, which three statements are true? (Choose three.)

• A. B cannot be final.
• B. B cannot be abstract.
• C. B is a subtype of A.
• D. A cannot be final.
• E. A is a subtype of B.
• F. A cannot be abstract.

Answer: B,C,D
NEW QUESTION # 76
Given:

executed with this command:
java Main one two three
What is the result?

• A. It creates an infinite loop printing:0). one1). two1). two...
• B. The compilation fails.
• C. A java.lang.NullPointerException is thrown.
• D. 0). one
• E. 0). one1). two2). three

Answer: A
NEW QUESTION # 77
Given:

What is the result?

• A. 5 5 3 3
• B. 3 5 3 3
• C. 3 3 3 3
• D. 3 5 3 5

Answer: B Explanation:

NEW QUESTION # 78
Given:

Which statement on line 1 enables this code fragment to compile?

• A. Function<String> function = m > m.toUpperCase();
• B. Function function = String::toUpperCase;
• C. UnaryOperator function = s > s.toUpperCase();
• D. UnaryOperator<String> function = String::toUpperCase;

Answer: D Explanation:

NEW QUESTION # 79
Given:

Which three classes successfully override showFirst ()?

• A.
• B.
• C.
• D.
• E.
• F.

Answer: F
NEW QUESTION # 80
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