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[General] Updated Oracle 1z0-809 Practice Material In 1 year

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【General】 Updated Oracle 1z0-809 Practice Material In 1 year

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To pass the Oracle 1z1-809 exam, candidates must have a strong foundation in Java programming concepts and a deep understanding of core Java libraries. Additionally, they must have practical experience using Java in a professional setting. Those who pass the exam will become certified Oracle Professional Developers, allowing them to stand out in the IT job market and open up new career opportunities.
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Oracle 1z0-809 Certification Exam consists of 85 questions that must be completed within 150 minutes. The questions are divided into multiple choice, drag and drop, and simulation formats. 1z0-809 exam is designed to test the candidate's knowledge and proficiency in Java SE 8 programming, including Lambda expressions, functional interfaces, and implementation of class design, among others.
Oracle Java SE 8 Programmer II Sample Questions (Q96-Q101):NEW QUESTION # 96
Given:

Which two interfaces can you use to create lambda expressions?
  • A. S
  • B. T
  • C. Q
  • D. R
  • E. P
  • F. U
Answer: B,F

NEW QUESTION # 97
Given the code fragments:
class ThreadRunner implements Runnable {
public void run () { System.out.print ("Runnable") ; }
}
class ThreadCaller implements Callable {
Public String call () throws Exception {return "Callable"; )
}
and
ExecutorService es = Executors.newCachedThreadPool ();
Runnable r1 = new ThreadRunner ();
Callable c1 = new ThreadCaller ();
// line n1
es.shutdown();
Which code fragment can be inserted at line n1to start r1and c1 threads?
Future<String> f1 = (Future<String>) es.submit (r1);
  • A. Future<String> f1 = es.execute (c1) ;
    Future<String> f1 = (Future<String>) es.execute(r1);
  • B. Future<String> f2 = (Future<String>) es.execute(c1);
    es.submit(r1);
  • C. es.execute (c1);
    es.execute (r1);
  • D. Future<String> f1 = es.submit (c1);
Answer: D

NEW QUESTION # 98
Given:
public class ScopeTest {
int j, int k;
public static void main(String[] args) {
ew ScopeTest().doStuff(); }
void doStuff() {
nt x = 5;
oStuff2();
System.out.println("x");
}
void doStuff2() {
nt y = 7;
ystem.out.println("y");
or (int z = 0; z < 5; z++) {
ystem.out.println("z");
ystem.out.println("y");
}
Which two items are fields?
  • A. y
  • B. k
  • C. z
  • D. x
  • E. j
Answer: B,E

NEW QUESTION # 99
Which two statements are true about the Fork/Join Framework? (Choose two.)
  • A. The RecursiveTask subclass is used when a task does not need to return a result.
  • B. The Fork/Join framework implements a work-stealing algorithm.
  • C. The Fork/Join solution when run on multicore hardware always performs faster than standard sequential
    solution.
  • D. The Fork/Join framework can help you take advantage of multicore hardware.
Answer: A,B

NEW QUESTION # 100
Given the code fragment:

What is the result?
  • A. Java EEJava EESE
  • B. Java SEJava EE
    Java EEJava SE
  • C. The program prints either:
    Java EEJava SE
  • D. Java EESE
Answer: B

NEW QUESTION # 101
......
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