2022 Valid 1z0-809 Exam Updates - 2022 Study Guide
1z0-809 Certification - The Ultimate Guide [Updated 2022]
1Z0-809 Exam topics
Candidates must know the exam topics before they start of preparation. Because it will really help them in hitting the core. Our Oracle 1Z0-809 exam dumps will include the following topics:
- Building Database Applications with JDBC
- Lambda Built-in Functional Interfaces
- Localization
- Java Concurrency
- Exceptions and Assertions
- Advanced Java Class Design
- Java Stream API
- Generics and Collections
- Java Class Design
- Java I/O Fundamentals
Difficulty in writing 1Z0-809 Exam
Oracle Certified Java Programmer is the most powerful certification that candidates can have on their resume. But for this, they will have to pass Oracle 1Z0-809 questions. Oracle 1Z0-809 is a challenging exam to pass this exam Candidates will have to work hard with the help of right focus and preparation material passing this exam is an achievable goal. ValidDumps help candidates by providing the most relevant and updated Oracle 1Z0-809 exam dumps. Furthermore, We also provide the Oracle 1Z0-809 practice test that will be much beneficial in the preparation. ValidDumps aims to provide the best Oracle 1Z0-809 exam dumps that is verified by the Oracle experts. If Candidates feel any doubt in the Oracle 1Z0-809 practice test then our team is always there to help them. Oracle 1Z0-809 exam dumps are the perfect way to prepare Oracle 1Z0-809 exam with good grades in the just first attempt. So, Candidates want instant success in the Oracle 1Z0-809 exam with quality Oracle 1Z0-809 training material then ValidDumps is the best option for them because our management is well trained in it and we update each question of all exams on regular basis after consulting recent updates with our Oracle certified professionals.
NEW QUESTION 112
Given the code fragment:
What is the result?
- A. A ClassCastException is thrown at line n1.
- B. Compilation fails at line n2.
- C. Compilation fails at line n1.
- D. A ClassCastException is thrown at line n2.
- E. Sum is 600
Answer: D
NEW QUESTION 113
Given the code fragment:
Which should be inserted into line n1to print Average = 2.5?
- A. IntStream str = IntStream.of (1, 2, 3, 4);
- B. DoubleStream str = Stream.of (1.0, 2.0, 3.0, 4.0);
- C. Stream str = Stream.of (1, 2, 3, 4);
- D. IntStream str = Stream.of (1, 2, 3, 4);
Answer: B
NEW QUESTION 114
Given the code fragment:
Which two code fragments, when inserted at line n1independently, result in the output PEEK: Unix?
- A. .findAny ();
- B. .findFirst ();
- C. allMatch ();
- D. anyMatch ();
- E. .noneMatch ();
Answer: A,B
NEW QUESTION 115
Given the code fragment:
Assume that the value of now is 6:30 in the morning.
What is the result?
- A. 0
- B. An exception is thrown at run time.
- C. 1
- D. c1
Answer: A
Explanation:
Explanation
NEW QUESTION 116
Given the structure of the STUDENT table:
Student (id INTEGER, name VARCHAR)
Given:
public class Test {
static Connection newConnection =null;
public static Connection get DBConnection () throws SQLException {
try (Connection con = DriveManager.getConnection(URL, username, password)) { newConnection = con;
}
return newConnection;
}
public static void main (String [] args) throws SQLException {
get DBConnection ();
Statement st = newConnection.createStatement();
st.executeUpdate("INSERT INTO student VALUES (102, 'Kelvin')");
}
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the URL, userName, and passWord exists.
The SQL query is valid.
What is the result?
- A. The program executes successfully and the STUDENT table is NOT updated with any record.
- B. A NullPointerException is thrown as runtime.
- C. The program executes successfully and the STUDENT table is updated with one record.
- D. A SQLException is thrown as runtime.
Answer: D
NEW QUESTION 117
Given the code fragment:
Which two modifications, when made independently, enable the code to print Joe:true:100.0?
- A. Option E
- B. Option C
- C. Option D
- D. Option B
- E. Option A
Answer: B,E
NEW QUESTION 118
Given the code fragments:
interface CourseFilter extends Predicate<String> {
public default boolean test (String str) {
return str.contains ("Java");
}
}
and
List<String> strs = Arrays.asList("Java", "Java EE", "Embedded Java");
Predicate<String> cf1 = s - > s.length() > 3;
Predicate cf2 = new CourseFilter() { //line n1
public boolean test (String s) {
return s.startsWith ("Java");
}
};
long c = strs.stream()
.filter(cf1)
.filter(cf2//line n2
.count();
System.out.println(c);
What is the result?
- A. 0
- B. A compilation error occurs at line n1.
- C. A compilation error occurs at line n2.
- D. 1
Answer: C
NEW QUESTION 119
Given the code fragments:
class Employee {
Optional<Address> address;
Employee (Optional<Address> address) {
this.address = address;
}
public Optional<Address> getAddress() { return address; }
}
class Address {
String city = "New York";
public String getCity { return city: }
public String toString() {
return city;
}
}
and
Address address = null;
Optional<Address> addrs1 = Optional.ofNullable (address);
Employee e1 = new Employee (addrs1);
String eAddress = (addrs1.isPresent()) ? addrs1.get().getCity() : "City Not
available";
What is the result?
- A. null
- B. City Not available
- C. A NoSuchElementException is thrown at run time.
- D. New York
Answer: B
NEW QUESTION 120
Given the code fragment:
List<Integer> nums = Arrays.asList (10, 20, 8):
System.out.println (
//line n1
);
Which code fragment must be inserted at line n1 to enable the code to print the maximum number in the nums
list?
- A. nums.stream().map(a -> a).max()
- B. nums.stream().max(Integer : : max).get()
- C. nums.stream().max(Comparator.comparing(a -> a)).get()
- D. nums.stream().max()
Answer: C
NEW QUESTION 121
Given: What is the result?
- A. Marrown NanRed JesOran
- B. Marrown String out of limits
- C. Marrown String out of limits JesOran
- D. Marrown String out of limits Array out of limits
Answer: C
NEW QUESTION 122
Given the code fragments:
interface CourseFilter extends Predicate<String> {
public default boolean test (String str) {
return str.equals ("Java");
}
}
and
List<String> strs = Arrays.asList("Java", "Java EE", "Java ME");
Predicate<String> cf1 = s - > s.length() > 3;
Predicate cf2 = new CourseFilter() { //line n1
public boolean test (String s) {
return s.contains ("Java");
}
};
long c = strs.stream()
. filter(cf1)
. filter(cf2 //line n2
. count();
System.out.println(c);
What is the result?
- A. A compilation error occurs at line n2.
- B. 0
- C. 1
- D. A compilation error occurs at line n1.
Answer: B
NEW QUESTION 123
Given the code fragment:
What is the result ?
- A. [X, X]
- B. [X]
[X, X]
[X, X, X]
[X, X, X, X] - C. [X]
[X, X]
[X, X, X] - D. [X, X]
[X, X, X, X]
Answer: B
NEW QUESTION 124
Given the code fragment:
List<String> colors = Arrays.asList("red", "green", "yellow");
Predicate<String> test = n - > {
System.out.println("Searching...");
return n.contains("red");
};
colors.stream()
. filter(c -> c.length() > 3)
. allMatch(test);
What is the result?
- A. Searching...
- B. Searching...
Searching...
Searching... - C. Searching...
Searching... - D. A compilation error occurs.
Answer: D
NEW QUESTION 125
Given:
And given the code fragment:
- A. Compilation fails at both line n1 and line n2.
- B. 4W 100 Auto
4W 150 Manual - C. null 0 Auto
4W 150 Manual - D. Compilation fails only at line n2.
- E. Compilation fails only at line n1.
Answer: D
NEW QUESTION 126
Which two code blocks correctly initialize a Locale variable?
- A. Locale loc1 = "UK";
- B. Locale loc5 = new Locale ("ru", "RU");
- C. Locale loc4 = Locale.UK;
- D. Locale loc2 = Locale.getInstance("ru");
- E. Locale loc3 = Locale.getLocaleFactory("RU");
Answer: B,C
NEW QUESTION 127
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?
- A. es.execute (r1);
Future<String> f1 = es.execute (c1) ; - B. es.submit(r1);
Future<String> f1 = es.submit (c1); - C. Future<String> f1 = (Future<String>) es.execute(r1);
Future<String> f2 = (Future<String>) es.execute(c1); - D. Future<String> f1 = (Future<String>) es.submit (r1);
es.execute (c1);
Answer: B
NEW QUESTION 128
Given:
Item table
* ID, INTEGER: PK
* DESCRIP, VARCHAR(100)
* PRICE, REAL
* QUANTITY< INTEGER
And given the code fragment:
9. try {
10. Connection conn = DriveManager.getConnection(dbURL, username, password);
11. String query = "Select * FROM Item WHERE ID = 110";
12. Statement stmt = conn.createStatement();
13. ResultSet rs = stmt.executeQuery(query);
14. while(rs.next()) {
15. System.out.println("ID: " + rs.getInt("Id"));
16. System.out.println("Description: " + rs.getString("Descrip"));
17. System.out.println("Price: " + rs.getDouble("Price"));
18. System.out.println(Quantity: " + rs.getInt("Quantity"));
19. }
20. } catch (SQLException se) {
21. System.out.println("Error");
22. }
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists.
The SQL query is valid.
What is the result?
- A. The code prints information about Item 110.
- B. An exception is thrown at runtime.
- C. Compilation fails.
- D. The code prints Error.
Answer: A
NEW QUESTION 129
Given the code fragments:
public class Book implements Comparator<Book> {
String name;
double price;
public Book () {}
public Book(String name, double price) {
this.name = name;
this.price = price;
}
public int compare(Book b1, Book b2) {
return b1.name.compareTo(b2.name);
}
public String toString() {
return name + ":" + price;
}
}
and
List<Book>books = Arrays.asList (new Book ("Beginning with Java", 2), new book ( "A
Guide to Java Tour", 3));
Collections.sort(books, new Book());
System.out.print(books);
What is the result?
- A. [Beginning with Java:2, A Guide to Java Tour:3]
- B. A compilation error occurs because the Book class does not override the abstract method compareTo ().
- C. [A Guide to Java Tour:3, Beginning with Java:2]
- D. An Exceptionis thrown at run time.
Answer: C
NEW QUESTION 130
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. A compilation error occurs at line n1.
- B. The program prints nothing.
- C.
- D. ueJa
Answer: C
NEW QUESTION 131
......
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.
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