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[General] Real 1z1-809 Braindumps - Latest 1z1-809 Mock Test

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【General】 Real 1z1-809 Braindumps - Latest 1z1-809 Mock Test

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Oracle 1z1-809 Certification Exam consists of 85 multiple-choice questions that need to be completed in 150 minutes. 1z1-809 exam covers various topics such as Java Class Design, Generics and Collections, Lambda Built-in Functional Interfaces, Java Stream API, Exceptions and Assertions, Java I/O Fundamentals, Java Concurrency, JDBC, Localization, Annotations, and Java Date/Time API. To pass the exam, you need to score at least 65% of the total marks. By passing the Java SE 8 Programmer II certification exam, you become a certified Java programmer and gain expertise in advanced Java programming concepts.
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Oracle Java SE 8 Programmer II Sample Questions (Q61-Q66):NEW QUESTION # 61
Given the code fragments:
class TechName   {
String techName;
TechName (String techName) {
this.techName=techName;
}
}
and
List<TechName> tech = Arrays.asList (
new TechName("Java-"),
new TechName("Oracle DB-"),
new TechName("J2EE-")
) ;
Stream<TechName> stre = tech.stream();
/ /line n1
Which should be inserted at line n1 to print Java-Oracle DB-J2EE-?
  • A. stre.forEach(System.out::print);
  • B. stre.map(a-> a).forEachOrdered(System.out::print);
  • C. stre.map(a-> a.techName).forEach(System.out::print);
  • D. stre.forEachOrdered(System.out::print);
Answer: B

NEW QUESTION # 62
Given:

Which two classes use the shape class correctly?

  • A. Option E
  • B. Option C
  • C. Option A
  • D. Option D
  • E. Option B
  • F. Option F
Answer: A,E
Explanation:
When an abstract class is subclassed, the subclass usually provides implementations for all of the abstract methods in its parent class (E). However, if it does not, then the subclass must also be declared abstract (B). Note: An abstract class is a class that is declared abstract--it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed.

NEW QUESTION # 63
Given:

What is the result?
  • A. Hi MyClass
  • B. A compilation error occurs.
  • C. Hi Interface-2
  • D. Hi Interface-1
Answer: A

NEW QUESTION # 64
Given the following code for the classes MyException and Test:

What is the result?
  • A. A compile time error occurs at line n1.
  • B. Either A or B
  • C. B
  • D. A
  • E. AB
Answer: C

NEW QUESTION # 65
Given the code fragment:

Which code fragment, when inserted at line 7, enables printing 100?
  • A. ToIntFunction<Integer> funRef = e -> e + 10;
    int result = funRef.applyAsInt (value);
  • B. ToIntFunction funRef = e -> e + 10;
    int result = funRef.apply (value);
  • C. IntFunction funRef = e -> e + 10;
    Integer result = funRef.apply (10);
  • D. Function<Integer> funRef = e -> e + 10;
    Integer result = funRef.apply(value);
Answer: D

NEW QUESTION # 66
......
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