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Reliable 1Z0-819 Exam Preparation, 1Z0-819 Reliable Test Prepar

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  You can also customize your Java SE 11 Developer (1Z0-819) exam dumps as per your needs. We believe that this assessment of preparation is essential to ensuring that you strengthen the concepts you need to succeed. Based on the results of your self-assessment tests, you can focus on the areas that need the most improvement.

  Oracle 1Z0-819 Exam Syllabus Topics:

  TopicDetailsTopic 1

  • Handle text using String and StringBuilder classes
  • Utilize polymorphism and casting to call methods, differentiate object type versus reference type

  Topic 2

  • Deploy and execute modular applications, including automatic modules
  • Implement functional interfaces using lambda expressions

  Topic 3

  • Create and use interfaces, identify functional interfaces
  • Initialize objects and their members using instance and static initialiser statements and constructors

  Topic 4

  • Create and use subclasses and superclasses, including abstract classes
  • Use local variable type inference, including as lambda parameters

  Topic 5

  • Understand variable scopes, apply encapsulation and make objects immutable
  • Connect to and perform database SQL operations, process query results using JDBC API

  Topic 6

  • Implement serialization and deserialization techniques on Java objects
  • Declare and instantiate Java objects including nested class objects

  Topic 7

  • Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
  • Sort collections and arrays using Comparator and Comparable interfaces

  
  

  Oracle 1Z0-819 exam covers a wide range of topics related to Java programming, including Java fundamentals, object-oriented programming, exception handling, collections, concurrency, I/O, JDBC, and more. 1Z0-819 exam is designed to test your understanding of the Java programming language and your ability to apply the concepts and principles in real-world scenarios. To succeed in the exam, you need to have a strong foundation in Java programming, hands-on experience in developing Java applications, and a solid understanding of the exam topics.

  Oracle Java SE 11 Developer Sample Questions (Q182-Q187):

  NEW QUESTION # 182
  Given:
  
  What is known about the Sportscar class?

  • A. The Sportscar subclass cannot override setTurbo method from the superclass Automobile.
  • B. The Sportscar class is a subclass of Automobile and inherits its methods.
  • C. The Sportscar class is a superclass that has more functionality than the Automobile class.
  • D. The Sportscar class inherits the setTurbo method from the superclass Automobile.

  Answer: B

  
  

  NEW QUESTION # 183
  Given:
  
  You want to obtain the Filechannel object on line 1.
  Which code fragment will accomplish this?
  A)
  
  B)
  
  C)
  
  D)
  

  • A. Option C
  • B. Option D
  • C. Option B
  • D. Option A

  Answer: D

  
  

  NEW QUESTION # 184
  Which two statements independently compile? (Choose two.)

  • A. List<? extends Number> list = new ArrayList();
  • B. List<? super Float> list = new ArrayList();
  • C. List<? extends Number> list = new ArrayList();
  • D. List<? super Short> list = new ArrayList();
  • E. List<? super Number> list = new ArrayList();

  Answer: A,D

  Explanation:
  

  
  

  NEW QUESTION # 185
  Given:
  
  What is the output?

  • A. 0
  • B. 1
  • C. Exception
  • D. 2

  Answer: D

  Explanation:
  

  
  

  NEW QUESTION # 186
  Which method throws an exception for not-a-number and infinite input values?

  • A.
  • B.
  • C.
  • D.

  Answer: D

  
  

  NEW QUESTION # 187
  ......

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