Free Oracle 1Z0-830 Exam Questions

Absolute Free 1Z0-830 Exam Practice for Comprehensive Preparation 

  • Oracle 1Z0-830 Exam Questions
  • Provided By: Oracle
  • Exam: Java SE 21 Developer Professional
  • Certification: Oracle Java
  • Total Questions: 84
  • Updated On: Mar 07, 2026
  • Rated: 4.9 |
  • Online Users: 168
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  • Question 1
    • Which methods compile? 

      Answer: A,B
  • Question 2
    • Which three of the following are correct about the Java module system? 

      Answer: B,C,F
  • Question 3
    • Given: java 

      String bread = optionalName.orElse("Baguette"); System.out.print("bread:" + bread); String dish = optionalName.orElseGet(() -> "Frog legs"); System.out.print(", dish:" + dish); try { String cheese = optionalName.orElseThrow(() -> new Exception()); System.out.println(", cheese:" + cheese); } catch (Exception exc) { System.out.println(", no cheese."); } What is printed?


      Answer: B
  • Question 4
    • Which of the following statements oflocal variables declared with varareinvalid?(Choose 4) 

      Answer: B,C,D,E
  • Question 5
    • Given: java ExecutorService service = Executors.newFixedThreadPool(2); Runnable task = () -> System.out.println("Task is complete"); service.submit(task); service.shutdown(); service.submit(task); What happens when executing the given code fragment? 


      Answer: A
PAGE: 1 - 17
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