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Practice Test Oracle 1z0-809 Fee - Dumps 1z0-809 Free Download

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To take the Oracle 1z0-809 Certification Exam, candidates must have a good understanding of the Java programming language, including its syntax, operators, and data types. They should also be familiar with object-oriented programming concepts and design patterns. Additionally, candidates should have experience in developing Java applications and be comfortable with using various Java frameworks.

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Oracle Java SE 8 Programmer II Sample Questions (Q189-Q194):

NEW QUESTION # 189
Given the code fragment:

What is the result?

A. 0
B. 1
C. Compilation fails.
D. 2

Answer: B

NEW QUESTION # 190
Given:

and the code fragment:

What is the result?

A. A compilation error occurs because the tryblock doesn't have a catchor finallyblock.
B. The program compiles successfully.
C. A compilation error occurs at line n1.
D. A compilation error occurs at line n2.

Answer: A

NEW QUESTION # 191
Given the code fragment:
public void recDelete (String dirName) throws IOException {
File [ ] listOfFiles = new File (dirName) .listFiles();
if (listOfFiles ! = null && listOfFiles.length >0) {
for (File aFile : listOfFiles) {
if (aFile.isDirectory ()) {
recDelete (aFile.getAbsolutePath ());
} else {
if (aFile.getName ().endsWith (".class"))
aFile.delete ();
}
}
}
}
Assume that Projects contains subdirectories that contain .class files and is passed as an argument to the
recDelete () method when it is invoked.
What is the result?

A. The method deletes the .class files of the Projects directory only.
B. The method throws an IOException.
C. The method executes and does not make any changes to the Projects directory.
D. The method deletes all the .class files in the Projects directory and its subdirectories.

Answer: D

NEW QUESTION # 192
Given the code fragment:
LocalDate valentinesDay =LocalDate.of(2015, Month.FEBRUARY, 14);
LocalDate nextYear = valentinesDay.plusYears(1);
nextYear.plusDays(15); //line n1
System.out.println(nextYear);
What is the result?

A. 2016-02-29
B. A DateTimeExceptionis thrown.
C. 2016-02-14
D. A compilation error occurs at line n1.

Answer: C

NEW QUESTION # 193
Given the code fragment:
BiFunction<Integer, Double, Integer> val = (t1, t2) -> t1 + t2; //line n1 System.out.println(val.apply(10, 10.5));
What is the result?

A. 20.5
B. 0
C. A compilation error occurs at line n2.
D. A compilation error occurs at line n1.

Answer: D

NEW QUESTION # 194
......

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