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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.
Oracle 1z0-809 exam is designed for experienced Java programmers who are looking to validate their knowledge and skills in advanced Java programming concepts. 1z1-809 Exam is part of the Oracle Certified Professional, Java SE 8 Programmer certification track and covers a wide range of topics including advanced data handling, concurrency, and security. Passing 1z1-809 exam demonstrates that a programmer has a solid understanding of the Java programming language and is able to work with its more complex features.
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Given:
final class Folder {//line n1
//line n2
public void open () {
System.out.print("Open");
}
}
public class Test {
public static void main (String [] args) throws Exception {
try (Folder f = new Folder()) {
f.open();
}
}
}
Which two modifications enable the code to print Open Close? (Choose two.)
A. At line n2, insert:final void close () {System.out.print("Close");}
B. Replace line n1 with:class Folder implements AutoCloseable {
C. Replace line n1 with:class Folder extends Closeable {
D. At line n2, insert:public void close () throws IOException {System.out.print("Close");}
E. Replace line n1 with:class Folder extends Exception {
Answer: B,D
NEW QUESTION # 140
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. k
B. j
C. y
D. x
E. z
Answer: A,B
NEW QUESTION # 141
Given the code fragment:
List<String> listVal = Arrays.asList("Joe", "aul", "Alice", "Tom");
System.out.println (
// line n1
);
Which code fragment, when inserted at line n1, enables the code to print the count of string elements whose length is greater than three?
A. listVal.stream().filter(x -> x.length()>3).count()
B. listVal.stream().map(x -> x.length()>3).count()
C. listVal.stream().filter(x -> x.length()>3).mapToInt(x -> x).count()
D. listVal.stream().peek(x -> x.length()>3).count().get()
Answer: A
NEW QUESTION # 142
Given:
What is the result?
A. A NullPointerException is thrown at run time.
B. IT:0.0
C. A compilation error occurs.
D. IT:null
Answer: B
NEW QUESTION # 143
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. 2016-02-14
B. A compilation error occurs at line n1.
C. A DateTimeExceptionis thrown.
D. 2016-02-29
Answer: C
NEW QUESTION # 144
......
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