1Z0-819Java SE 11 Developer
315 Questions and Answers Experienced specialists selected 315 questions for this exam. All answers are verified to ensure correctness.
Last Updated Apr 23, 2024 Ace your exams with our consistently updated 1Z0-819 exam dumps.
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1Z0-819 Online Practice Questions and Answers
Given the code fragment:
What is the result?
A. [Lettuce, Kale]
B. A compilation error is thrown.
C. [Lettuce, Kale] [Seabass, Salmon]
D. [Kale, Lettuce] [Salmon, Seabass]
Given:
What is the result?
A. Map: 0 Keys: 0 Values: 0
B. The compilation fails.
C. Map: 4 Keys: 4 Values: 4
D. Map: 4 Keys: 0 Values: 0
E. Map: 0 Keys: 4 Values: 4
Given: What is required to make the Foo class thread safe?
A. No change is required.
B. Make the declaration of lock static.
C. Replace the lock constructor call with new ReentrantLock (true).
D. Move the declaration of lock inside the foo method.
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Oracle 1Z0-819 exam official information: Candidates who hold this certification have demonstrated proficiency in Java (Standard Edition) software development recognized by a wide range of world-wide industries. They have also exhibited thorough and broad knowledge of the Java programming language, coding practices and utilization of new features incorporated into Java SE 11.
