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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:

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

Oracle Java SE 11 Developer Sample Questions (Q134-Q139):

NEW QUESTION # 134
Given:

Which is true?

• A. The code compiles but does not print any result.
• B. The code does not compile.
• C. The code prints 25.
• D. The code throws an exception at runtime.

Answer: B
NEW QUESTION # 135
Given the Person class with age and name along with getter and setter methods, and this code fragment:

What will be the result?

• A. Aman Tom Peter
• B. Tom Aman Peter
• C. Tom Peter Aman
• D. Aman Peter Tom

Answer: D
NEW QUESTION # 136
Given:

What is the result?

• A. nullMary
• B. Joenull
• C. nullnull
• D. JoeMarry

Answer: A Explanation:

NEW QUESTION # 137
Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

• A. In Line 1, change the access modifier to privateprivate Person() {
• B. In Line 1, remove the access modifierPerson() {
• C. In Line 2, change the access modifier to protectedprotected class Main {
• D. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
• E. In Line 1, change the access modifier to publicpublic Person() {

Answer: D,E
NEW QUESTION # 138
Given the code fragment:

Which code fragment replaces the for statement?

• A. IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);
• B. intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);
• C. IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);
• D. IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

Answer: A
NEW QUESTION # 139
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