New 2021 1z0-809 Dumps for Java SE Certified Exam Questions & Answer
Realistic Verified 1z0-809 exam dumps Q&As - 1z0-809 Free Update
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:
- Exceptions and Assertions. In other words, how to use try-catch and throw statements, alongside creating custom exceptions and Auto-closeable resources.
- I/O Fundamentals. It means the skill of reading and writing data from the console.
- 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.
- Advanced Class Design. Specifically, candidates must demonstrate skills in how to implement encapsulation, polymorphism, and inheritance.
- 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.
- Generics and Collections. This allows the candidate to create and use a generic class as well as ArrayList, TreeSet, TreeMap, and ArrayDeque objects.
- Java Concurrency. The candidates must be able to create worker threads, as well as to use parallel Fork/Join Framework and parallel Streams.
- NIO.2, Path Interface, and Files Class.
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.
How to book the 1Z0-809 Exam
These are following steps for registering the Oracle 1Z0-809 exam. Step 1: Visit to Pearson Exam Registration Step 2: Signup/Login to Pearson VUE account Step 3: Search for Oracle 1Z0-809 Exam Certifications Exam Step 4: Select Date, time and confirm with the payment method
Preparation Resources
Now that you have made your decision and know the date of the final test, you can make a plan for your thorough training. Keep in mind that the field of Java is constantly evolving, so choose only relevant and credible sources for preparation. We can find many options on the Internet: training courses, sets of questions, and study guides such as.
- ‘Oracle Certified Professional Java SE 8 Programmer Exam 1Z0-809: A Comprehensive OCPJP 8 Certification Guide 2nd Edition’ by SG Ganesh, Hari Kiran Kumar, Tushar Sharma. A group of expert authors has developed a training guide consisting of 14 chapters to prepare candidates for all 1Z0-809 exam topics and develop all the skills necessary for a professional Java SE 8 developer. The book begins with answers to the most frequently asked questions about the OCP Java SE 8 Programmer certification process, and at the end of the training you will be offered a practice exam for your self-check. What's more, for a more comprehensive approach, you'll get real-life examples, practice questions, exam notes and tips. Anyone can order this book in the Kindle version or print format on Amazon, and then get the key to passing the Oracle 1Z0-809 exam brilliantly.
- ‘OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide: Exam 1Z0-809 1st Edition, Kindle Edition by Jeanne Boyarsky and Scott Selikoff. The study guide, developed by expert Java developers, aims to strengthen candidates' existing knowledge as well as to develop new skills needed to obtain the OCP Java SE 8 Programmer certification. As a result, you will gain a solid understanding of abstract classes, interfaces, and class design, learn object-oriented design principles and patterns, and deepen into functional programming. And thanks to the practical work with expert-led database practice you will master input-output, NIO, and JDBC, which will help you not only to pass the Oracle 1Z0-809 exam perfectly but also to sharpen the skills necessary for a Java developer in solving everyday tasks. So when you order this guide from Amazon in Kindle or Paperback version, you get not only the prep material but also the insight, explanations, and perspectives that come from years of experience
- ‘OCP Java SE 8 Programmer II Exam Guide (Exam 1Z0-809) 7th Edition’ by Kathy Sierra, Bert Bates, and Elisabeth Robson. Developed by a team of experts, including two Java SE 8 Programmer II exam developers, the study guide fully follows the objectives of the official test and assists candidates greatly in through preparation for this Oracle exam. The book's content is designed to provide comprehensive coverage of each topic such as object orientation, streams, threads, and concurrency, as well as providing you with the fundamentals of programming in the Java language. So, both the Kindle and the print version are available on Amazon making it easy for any candidate to obtain the OCP Java SE 8 Programmer certification.
In other words, there are a huge number of training resources available to you to help you write your final test with flying colors, become an Oracle Certified Professional Java SE 8 Programmer, and take the next step in your IT career.
NEW QUESTION 92
Given:
What is the result?
- A. 10 20 30 40
- B. An exception is thrown at runtime.
- C. Compilation fails.
- D. 0 0 30 40
Answer: D
NEW QUESTION 93
Given:
What is the result?
- A. Hi Interface-2
- B. A compilation error occurs.
- C. Hi Interface-1
- D. Hi MyClass
Answer: D
NEW QUESTION 94
Given the code fragment:
public static void main (String[] args) throws IOException {
BufferedReader brCopy = null;
try (BufferedReader br = new BufferedReader (new FileReader("employee.txt"))) { //
line n1
br.lines().forEach(c -> System.out.println(c));
brCopy = br;//line n2
}
brCopy.ready(); //line n3;
}
Assume that the ready method of the BufferedReader, when called on a closed BufferedReader, throws an
exception, and employee.txt is accessible and contains valid text.
What is the result?
- A. The code prints the content of the employee.txt file and throws an exception at line n3.
- B. A compilation error occurs at line n3.
- C. A compilation error occurs at line n1.
- D. A compilation error occurs at line n2.
Answer: A
NEW QUESTION 95
Which three statements describe the object-oriented features of the Java language?
- A. Objects can share behaviors with other objects.
- B. A package must contain more than one class.
- C. A main method must be declared in every class.
- D. A subclass can inherit from a superclass.
- E. Objects cannot be reused.
- F. object. is the root class of all other objects.
Answer: A,C,D
NEW QUESTION 96
Given the code fragment:
ZonedDateTime depart = ZonedDateTime.of(2015, 1, 15, 3, 0, 0, 0, ZoneID.of("UTC-7"));
ZonedDateTime arrive = ZonedDateTime.of(2015, 1, 15, 9, 0, 0, 0, ZoneID.of("UTC-5"));
long hrs = ChronoUnit.HOURS.between(depart, arrive); //line n1
System.out.println("Travel time is" + hrs + "hours");
What is the result?
- A. Travel time is 4 hours
- B. Travel time is 6 hours
- C. Travel time is 8 hours
- D. An exception is thrown at line n1.
Answer: A
NEW QUESTION 97
Given:
public class Product {
int id; int price;
public Product (int id, int price) {
this.id = id;
this.price = price;
}
Public String toString () { return id + ":" + price;)
}
and the code fragment:
List<Product> products = new ArrayList <> (Arrays.asList(new Product(1, 10),
new Product (2, 30),
new Product (3, 20));
Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> {
p1.price+=p2.price;
return new Product (p1.id, p1.price);});
products.add(p);
products.stream().parallel()
. reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)
. ifPresent(System.out: :println);
What is the result?
- A. 2:30
- B. 4:60
- C. The program prints nothing
- D. 4:60
2:30
3:20
1:10 - E. 4:0
Answer: D
NEW QUESTION 98
For which three objects must a vendor provide implementations in its JDBC driver?
- A. Date
- B. ResultSet
- C. DriverManager
- D. Statement
- E. SQLException
- F. Connection
- G. Time
Answer: B,D,F
Explanation:
Explanation
Database vendors support JDBC through the JDBC driver interface or through the ODBC connection. Each driver must provide implementations of java.sql.Connection, java.sql.Statement, java.sql.PreparedStatement, java.sql.CallableStatement, and java.sql.Re sultSet. They must also implement the java.sql.Driver interface for use by the generic java.sql.DriverManager interface.
NEW QUESTION 99
Given:
public class product {
int id; int price;
public Product (int id, int price) {
this.id = id;
this.price = price;
}
public String toString() { return id + ":" + price; }
}
and the code fragment:
List<Product> products = Arrays.asList(new Product(1, 10),
new Product (2, 30),
new Product (2, 30));
Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> {
p1.price+=p2.price;
return new Product (p1.id, p1.price);});
products.add(p);
products.stream().parallel()
.reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)
.ifPresent(System.out: :println);
What is the result?
2 : 30
- A. The program prints nothing.
- B. 2 : 30
3 : 20
1 : 10 - C. 4 : 60
- D. 4 : 0
- E. 4 : 60
Answer: C
NEW QUESTION 100
Given:
What is the result?
- A. Welcome Log 1:0
- B. Hello Log 2:1
- C. Hello Log 1:0
- D. Welcome Log 2:1
Answer: D
NEW QUESTION 101
Given the code fragment:
Assume that dbURL, userName, and passwordare valid.
Which code fragment can be inserted at line n1to enable the code to print Connection Established?
Properties prop = new Properties();
- A. Properties prop = new Properties();
- B. prop.put (“user”, userName);
prop.put (“password”, password);
con = DriverManager.getConnection (dbURL, prop);
con = DriverManager.getConnection (userName, password, dbURL); - C. prop.put (“userid”, userName);
prop.put (“password”, password);
prop.put(“url”, dbURL);
con = DriverManager.getConnection (prop);
con = DriverManager.getConnection (dbURL); - D. con.setClientInfo (“user”, userName);
con.setClientInfo (“password”, password);
Answer: B
NEW QUESTION 102
Given:
interface Doable {
public void doSomething (String s);
}
Which two class definitions compile? (Choose two.)
- A. public class Job implements Doable {
public void doSomething(Integer i) { }
} - B. public class Do implements Doable {
public void doSomething(Integer i) { }
public void doSomething(String s) { }
public void doThat (String s) { }
} - C. public abstract class Task implements Doable {
public void doSomethingElse(String s) { }
} - D. public class Action implements Doable {
public void doSomething(Integer i) { }
public String doThis(Integer j) { }
} - E. public abstract class Work implements Doable {
public abstract void doSomething(String s) { }
public void doYourThing(Boolean b) { }
}
Answer: B,C
NEW QUESTION 103
Given the code fragment:
Which code fragment prints red: blue: sma11: medium: ?
- A. Option D
- B. Option A
- C. Option C
- D. Option B
Answer: D
NEW QUESTION 104
Given the code fragment:
public class FileThread implements Runnable {
String fName;
public FileThread(String fName) { this.fName = fName; }
public void run () System.out.println(fName);}
public static void main (String[] args) throws IOException,
InterruptedException {
ExecutorService executor = Executors.newCachedThreadPool();
Stream<Path> listOfFiles = Files.walk(Paths.get("Java Projects"));
listOfFiles.forEach(line -> {
executor.execute(new FileThread(line.getFileName().toString()));
//
line n1
});
executor.shutdown();
executor.awaitTermination(5, TimeUnit.DAYS); //
line n2
}
}
The Java Projectsdirectory exists and contains a list of files.
What is the result?
- A. The program prints files names concurrently.
- B. The program throws a runtime exception at line n2.
- C. A compilation error occurs at line n1.
- D. The program prints files names sequentially.
Answer: B
NEW QUESTION 105
Given:
What is the result?
- A. Area is 3.0
- B. Area is 6.0
- C. Compilation fails at line n1.
- D. Compilation fails at line n2.
Answer: D
NEW QUESTION 106
Given the code fragment:
Which modification enables the code to print Price 5 New Price 4?
- A. Replace line n3 with .forEach (n -> System.out.println ("New Price" + n));
- B. Replace line n2 with .mapToInt (n -> n - 1);
- C. Replace line n1 with .forEach (e -> System.out.print ("Price" + e))
- D. Replace line n2 with .map (n -> System.out.println ("New Price" + n -1)) and remove line n3
Answer: D
NEW QUESTION 107
Which three statements describe the object-oriented features of the Java language?
- A. Objects can share behaviors with other objects.
- B. A package must contain more than one class.
- C. A subclass can inherit from a superclass.
- D. A main method must be declared in every class.
- E. object. is the root class of all other objects.
- F. Objects cannot be reused.
Answer: A,C,E
Explanation:
java.lang.Object
public class Object
Class Object is the root of the class hierarchy. Every class has Object as a superclass. All objects, including arrays, implement the methods of this class.
https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html
NEW QUESTION 108
Given:
What is the result?
- A. 10 : 22 : 20
- B. 10 : 22 : 6
- C. 10 : 22 : 22
- D. 10 : 30 : 6
Answer: C
NEW QUESTION 109
Given the code fragment:
What is the result?
- A. The code reads the password without echoing characters on the console.
- B. A compilation error occurs at line n1.
- C. A compilation error occurs because the IOExceptionisn’t declared to be thrown or caught?
- D. A compilation error occurs at line n2.
Answer: C
NEW QUESTION 110
Given:
public class product {
int id; int price;
public Product (int id, int price) {
this.id = id;
this.price = price;
}
public String toString() { return id + ":" + price; }
}
and the code fragment:
List<Product> products = Arrays.asList(new Product(1, 10),
new Product (2, 30),
new Product (2, 30));
Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> {
p1.price+=p2.price;
return new Product (p1.id, p1.price);});
products.add(p);
products.stream().parallel()
.reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)
.ifPresent(System.out: :println);
What is the result?
- A. 2 : 30
- B. The program prints nothing.
- C. 4 : 602 : 303 : 201 : 10
- D. 4 : 70
- E. 4 : 0
Answer: D
NEW QUESTION 111
......
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