TEST 1Z1-819 ONLINE, FREE 1Z1-819 DUMPS

Test 1z1-819 Online, Free 1z1-819 Dumps

Test 1z1-819 Online, Free 1z1-819 Dumps

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Oracle 1z1-819 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Develop code that mitigates security threats such as denial of service
  • Use Java Streams to filter, transform and process data
Topic 2
  • Implement serialization and deserialization techniques on Java objects
  • Declare and instantiate Java objects including nested class objects
Topic 3
  • Create and use interfaces, identify functional interfaces
  • Initialize objects and their members using instance and static initialiser statements and constructors
Topic 4
  • Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
  • Sort collections and arrays using Comparator and Comparable interfaces
Topic 5
  • Handle text using String and StringBuilder classes
  • Utilize polymorphism and casting to call methods, differentiate object type versus reference type
Topic 6
  • Create and use subclasses and superclasses, including abstract classes
  • Use local variable type inference, including as lambda parameters

Java is one of the most popular programming languages in the world, and Java SE 11 is the latest version of Java. 1z1-819 Exam is based on Java SE 11, which means that it covers all the new features and enhancements that have been introduced in this version of Java. Passing 1z1-819 exam is a great way for Java developers to demonstrate their expertise in the latest version of Java.

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The Oracle 1z1-819 exam covers a wide range of topics, including Java syntax and data types, object-oriented programming principles, exception handling, and concurrency. Candidates are expected to be familiar with the Java SE 11 platform and have experience in developing and testing Java applications. 1z1-819 Exam is designed to test both theoretical knowledge and practical skills, and candidates are required to complete coding tasks and answer multiple-choice questions.

Oracle Java SE 11 Developer Sample Questions (Q109-Q114):

NEW QUESTION # 109
Which is a proper JDBC URL?

  • A. jdbc:mysql://localhost:3306/database
  • B. http://localhost.mysql.com:3306/database
  • C. http://localhost
    mysql.jdbc:3306/database
  • D. jdbe.mysql.com://localhost:3306/database

Answer: A


NEW QUESTION # 110
Given:

You want to use the myResource class in a try-with-resources statement. Which change will accomplish this?

  • A. Implement AutoCloseable and override the close method.
  • B. Implement AutoCloseable and override the autoClose method.
  • C. Extend AutoCloseable and override the autoClose method.
  • D. Extend AutoCloseable and override the close method.

Answer: A


NEW QUESTION # 111
Given the code fragment:

What is the result?

  • A. CNY -> 6.42
    EUR -> 0.84
    GBP -> 0.75
    USD -> 1.00
  • B. EUR -> 0.84
    GBP -> 0.75
    USD -> 1.00
    CNY -> 6.42
  • C. USD -> 1.00
    GBP -> 0.75
    EUR -> 0.84
    CNY -> 6.42
  • D. The compilation fails.

Answer: D

Explanation:


NEW QUESTION # 112
Given:

What is the result?

  • A. An indexOutofBoundsException is thrown at runtime.
  • B. Hat at store 4
  • C. At once 1
  • D. Hat at store 1
  • E. At once 0

Answer: D


NEW QUESTION # 113
Assuming the Widget class has a getPrice method, this code does not compile:

Which two statements, independently, would allow this code to compile? (Choose two.)

  • A. Replace line 5 with widgetStream.filter((Widget a) -> a.getPrice() > 20.00).
  • B. Replace line 5 with widgetStream.filter(a -> ((Widget)a).getPrice() > 20.00).
  • C. Replace line 1 with List<Widget> widgetStream = widgets.stream();.
  • D. Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.

Answer: B,D


NEW QUESTION # 114
......

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