Pass Java SE 1z0-809 exam [Jan 26, 2022] Updated 195 Questions
Oracle 1z0-809 Actual Questions and 100% Cover Real Exam Questions
How to study the 1Z0-809 Exam
There are two main types of resources for preparation of certification exams first there are the study guides and the books that are detailed and suitable for building knowledge from ground up then there are video tutorial and lectures that can somehow ease the pain of through study and are comparatively less boring for some candidates yet these demand time and concentration from the learner. Smart Candidates who want to build a solid foundation in all exam topics and related technologies usually combine video lectures with study guides to reap the benefits of both but there is one crucial preparation tool as often overlooked by most candidates the practice exams. Practice exams are built to make students comfortable with the real exam environment. Statistics have shown that most students fail not due to that preparation but due to exam anxiety the fear of the unknown. DumpsActual expert team recommends you to prepare some notes on these topics along with it don’t forget to practice Oracle 1Z0-809 dumps which have been written by our expert team, Both these will help you a lot to clear this exam with good marks.
Oracle Java SE 8 Programmer II 1Z0-809 Exam
Oracle Java SE 8 Programmer II 1Z0-809 Exam is related to Oracle Java SE and credits toward Oracle Certified Professional and Java SE 8 Programmer Certification. This exam is part second of the Java SE 8 Programmer. This exam validates the ability to develop code that uses the static keyword on blocks, variables, methods and chases, implements and intends interfaces and use the at override annotation, search for data by using search methods of the stream classes, save results to a collection. It also validates the ability to create and manage date-based and time-based events including a combination of date and time int a single object. Java EE Developers, Web Developers and Java Developers usually hold or pursue this certification and you can expect the same job role after completion of this certification.
NEW QUESTION 20
Given the code fragment:
List<Integer> codes = Arrays.asList (10, 20);
UnaryOperator<Double> uo = s -> s +10.0;
codes.replaceAll(uo);
codes.forEach(c -> System.out.println(c));
What is the result?
- A. A compilation error occurs.
- B. 20.0
30.0 - C. 10
20 - D. A NumberFormatExceptionis thrown at run time.
Answer: A
NEW QUESTION 21
Given the records from the STUDENTtable:
Given the code fragment:
Assume that the URL, username,and passwordare valid.
What is the result?
- A. The STUDENTtable is updated with the record:
113 : Jannet : [email protected]
and the program prints:
113 : Jannet : [email protected] - B. The STUDENT table is not updated and the program prints:
114 : John : [email protected] - C. A SQLExceptionis thrown at run time.
- D. The STUDENTtable is updated with the record:
113 : Jannet : [email protected]
and the program prints:
114 : John : [email protected]
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION 22
Given the code fragment:
What is the result?
- A. courseJava
- B. A compilation error occurs at line n2.
- C. A compilation error occurs at line n1.
- D. Javacourse
Answer: B
NEW QUESTION 23
Given the code fragment:
Assume that dbURL, userName, and password are valid.
Which code fragment can be inserted at line n1 to enable the code to print Connection Established?
- A. Properties prop = new Properties();
prop.put ("user", userName);
prop.put ("password", password);
con = DriverManager.getConnection (dbURL, prop); - B. Properties prop = new Properties();
prop.put ("userid", userName);
prop.put ("password", password);
prop.put("url", dbURL);
con = DriverManager.getConnection (prop); - C. con = DriverManager.getConnection (userName, password, dbURL);
- D. con = DriverManager.getConnection (dbURL);
con.setClientInfo ("user", userName);
con.setClientInfo ("password", password);
Answer: A
NEW QUESTION 24
Given:
And given the code fragment:
What is the result?
- A. Compilation fails at line n1.
- B. Read E-Book
- C. Read Book
- D. Compilation fails at line n2.
- E. Compilation fails at line n3.
Answer: E
NEW QUESTION 25
Given the content of /resourses/Message.properties:
welcome1="Good day!"
and given the code fragment:
Properties prop = new Properties ();
FileInputStream fis = new FileInputStream ("/resources/Message.properties");
prop.load(fis);
System.out.println(prop.getProperty("welcome1"));
System.out.println(prop.getProperty("welcome2", "Test"));//line n1
System.out.println(prop.getProperty("welcome3"));
What is the result?
- A. Good day!Testfollowed by an Exception stack trace
- B. Good day!followed by an Exception stack trace
- C. A compilation error occurs at line n1.
- D. Good day!Testnull
Answer: D
NEW QUESTION 26
Given the Greetings.properties file, containing:
and given:
What is the result?
- A. HELLO_MSG
- B. Goodbye everyone!
- C. GOODBY_MSG
- D. Compilation fails.
- E. Hello, everyone!
Answer: D
NEW QUESTION 27
Given:
class Vehicle {
int vno;
String name;
public Vehicle (int vno, String name) {
this.vno = vno,;
this.name = name;
}
public String toString () {
return vno + ":" + name;
}
}
and this code fragment:
Set<Vehicle> vehicles = new TreeSet <> ();
vehicles.add(new Vehicle (10123, "Ford"));
vehicles.add(new Vehicle (10124, "BMW"));
System.out.println(vehicles);
What is the result?
- A. A ClassCastException is thrown at run time.
- B. 10123 Ford 10124 BMW
- C. A compilation error occurs.
- D. 10124 BMW 10123 Ford
Answer: D
NEW QUESTION 28
Given:
and the code fragment:
What is the result?
- A. 2000.0
- B. 0.0
- C. 1500.0
- D. A compilation error occurs.
Answer: C
NEW QUESTION 29
Which statement is true about java.util.stream.Stream?
- A. A parallel stream is always faster than an equivalent sequential stream.
- B. The execution mode of streams can be changed during processing.
- C. Streams are intended to modify the source data.
- D. A stream cannot be consumed more than once.
Answer: D
NEW QUESTION 30
Given that /green.txtand /colors/yellow.txtare accessible, and the code fragment:
Path source = Paths.get("/green.txt);
Path target = Paths.get("/colors/yellow.txt);
Files.move(source, target, StandardCopyOption.ATOMIC_MOVE);
Files.delete(source);
Which statement is true?
- A. The green.txtfile content is replaced by the yellow.txtfile content and the yellow.txtfile is deleted.
- B. A FileAlreadyExistsExceptionis thrown at runtime.
- C. The file green.txtis moved to the /colorsdirectory.
- D. The yellow.txtfile content is replaced by the green.txtfile content and an exception is thrown.
Answer: B
NEW QUESTION 31
Given:
public interface Moveable<Integer> {
public default void walk (Integer distance) {System.out.println
( "Walking");)
public void run(Integer distance);
}
Which statement is true?
- A. Movablecannot be used in a lambda expression.
- B. Moveablecan be used as below:
Moveable<Integer> animal = n - > n + 10;
animal.run(100);
animal.walk(20); - C. Moveablecan be used as below:
Moveable<Integer> animal = n - > System.out.println("Running" + n);
animal.run(100);
animal.walk(20); - D. Moveablecan be used as below:
Moveable animal = (Integer n) - > System.out.println(n);
animal.run(100);
Moveable.walk(20);
Answer: B
NEW QUESTION 32
Given that these files exist and are accessible:
and given the code fragment:
Which code fragment can be inserted at line n1to enable the code to print only /company/emp?
Stream<Path> stream = Files.list (Paths.get ("/company"));
- A. Stream<Path> stream = Files.list (Paths.get ("/company/emp"));
- B. Stream<Path> stream = Files.find(
- C. Paths.get ("/company"), 1,
(p,b) -> b.isDirectory (), FileVisitOption.FOLLOW_LINKS); - D. Stream<Path> stream = Files.walk (Paths.get ("/company"));
Answer: C
NEW QUESTION 33
Given the code fragment:
What is the result?
- A. Checking...Checking...
- B. A compilation error occurs at line n2.
- C. Checking...
- D. A compilation error occurs at line n1.
Answer: D
NEW QUESTION 34
Given the code fragment:
Which code fragment, when inserted at line n1, ensures falseis printed?
- A. boolean b = cs.stream() .findFirst() .get() .equals("Java");
- B. boolean b = cs.stream() .allMatch(w -> w.equals("Java"));
- C. boolean b = cs.stream() .anyMatch (w -> w.equals ("Java"));
- D. boolean b = cs.stream() .findAny() .get() .equals("Java");
Answer: C
NEW QUESTION 35
Given the code fragment:
List<String> listVal = Arrays.asList("Joe", "Paul", "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().map(x -> x.length()>3).count()
- B. listVal.stream().filter(x -> x.length()>3).mapToInt(x -> x).count()
- C. listVal.stream().filter(x -> x.length()>3).count()
- D. listVal.stream().peek(x -> x.length()>3).count().get()
Answer: D
NEW QUESTION 36
Given that course.txt is accessible and contains:
Course : : Java
and given the code fragment:
public static void main (String[ ] args) {
int i;
char c;
try (FileInputStream fis = new FileInputStream (“course.txt”);
InputStreamReader isr = new InputStreamReader(fis);) {
while (isr.ready()) { //line n1
isr.skip(2);
i = isr.read ();
c = (char) i;
System.out.print(c);
}
} catch (Exception e) {
e.printStackTrace();
}
}
What is the result?
ur :: va
- A.
- B. ueJa
- C. A compilation error occurs at line n1.
- D. The program prints nothing.
Answer: A
NEW QUESTION 37
Given the definition of the Employee class:
and this code fragment:
What is the result?
- A. [Ada:sales, Bob:sales, Bob:hr, Eva:hr]
- B. [hr:Eva, hr:Bob, sales:Bob, sales:Ada]
- C. [hr:Bob, hr:Eva, sales:Ada, sales:Bob]
- D. [sales:Ada, hr:Bob, sales:Bob, hr:Eva]
Answer: C
NEW QUESTION 38
......
Given that this exam is at the professional level of certification, candidates have a large amount of work to do. Therefore, the first thing that is recommended is to thoroughly review the complete list of topics available on the official exam page, which includes:
- I/O Fundamentals. It means the skill of reading and writing data from the console.
- NIO.2, Path Interface, and Files Class.
- Localization. In particular how to read and set the locale by using the Locale object, to create and read a Properties file, and to build a recourse bundle for each locale.
- Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.
- Stream API. It means the code development that uses optional class, Stream data, and calculation methods in addition to sorting a collection using Stream API.
- Java Concurrency. The candidates must be able to create worker threads, as well as to use parallel Fork/Join Framework and parallel Streams.
- Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
- Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
To apply for this Oracle certification test, you should first pay $245 for a voucher. After that, go to Pearson VUE and log into your account. Enter the exam code, which should be 1Z0-809, and follow the instructions that will pop up.
Oracle 1z0-809 Real 2022 Braindumps Mock Exam Dumps: https://www.dumpsactual.com/1z0-809-actualtests-dumps.html
1z0-809 Free Exam Questions & Answers PDF Updated on Jan-2022: https://drive.google.com/open?id=17X3e4IE2KoHkJzDE0N6YgYRG_Rqm4eOV
