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Oracle 1z1-809 certification exam is recognized globally and demonstrates that the candidate has a deep understanding of Java SE 8 technologies. It also enhances the candidate's job prospects and salary potential. Java SE 8 Programmer II certification is valuable for Java developers, software engineers, and architects who want to work on Java-based applications and systems. With the Java SE 8 certification, a candidate can also pursue advanced Java certifications, such as Java EE or Java ME, to further advance their career.
NEW QUESTION # 31
Given:
What is the result?
- A. An exception is thrown at runtime
- B. Compilation fails
- C. 0
- D. Null
Answer: A
NEW QUESTION # 32
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. 0
- B. 1
- C. A compilation error occurs at line n2.
- D. A compilation error occurs at line n1.
Answer: A
NEW QUESTION # 33
Given the structure of the Student table:
Student (id INTEGER, name VARCHAR)
Given the records from the STUDENT table:
Given the code fragment:
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists.
What is the result?
- A. A SQLException is thrown at runtime.
- B. The program prints Status: false but the records from the Student table are not deleted.
- C. The program prints Status: true and two records are deleted from the Student table.
- D. The program prints Status: false and two records are deleted from the Student table.
Answer: D
NEW QUESTION # 34
Given the code fragment:
Which code fragment, when inserted at line n1, ensures false is printed?
- A. boolean b = cs.stream() .anyMatch (w -> w.equals ("Java"));
- B. boolean b = cs.stream() .findFirst() .get() .equals("Java");
- C. boolean b = cs.stream() .findAny() .get() .equals("Java");
- D. boolean b = cs.stream() .allMatch(w -> w.equals("Java"));
Answer: A
NEW QUESTION # 35
Given:
Which two interfaces can you use to create lambda expressions? (Choose two.)
- A. R
- B. Q
- C. S
- D. P
- E. U
- F. T
Answer: C,D
NEW QUESTION # 36
Given:
public class Customer {
private String fName;
private String lName;
private static int count;
public customer (String first, String last) {fName = first, lName = last;
+ +count;}
static { count = 0; }
public static int getCount() {return count; }
}
public class App {
public static void main (String [] args) {
Customer c1 = new Customer("Larry", "Smith");
Customer c2 = new Customer("Pedro", "Gonzales");
Customer c3 = new Customer("Penny", "Jones");
Customer c4 = new Customer("Lars", "Svenson");
c4 = null;
c3 = c2;
System.out.println (Customer.getCount());
}
}
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: E
NEW QUESTION # 37
Given:
and the code fragment:
What is the result?
- A. Java EE
Java ME - B. [Java EE: Helen:Houston]
[Java ME: Jessy:Chicago, Java ME: Mark:Chicago] - C. [Java ME: Jessy:Chicago, Java ME: Mark:Chicago]
[Java EE: Helen:Houston] - D. A compilation error occurs.
Answer: D
NEW QUESTION # 38
Which three statements describe the object-oriented features of the Java language?
- A. A subclass can inherit from a superclass.
- B. A package must contain more than one class.
- C. Objects cannot be reused.
- D. Objects can share behaviors with other objects.
- E. A main method must be declared in every class.
- F. object. is the root class of all other objects.
Answer: A,D,E
NEW QUESTION # 39
Given:
interface Doable {
public void doSomething (String s);
}
Which two class definitions compile?
- A. public class Action implements Doable {
public void doSomething(Integer i) { }
public String doThis(Integer j) { }
} - B. public class Job implements Doable {
public void doSomething(Integer i) { }
} - C. public abstract class Task implements Doable {
public void doSomethingElse(String s) { }
} - D. public abstract class Work implements Doable {
public abstract void doSomething(String s) { }
public void doYourThing(Boolean b) { }
} - E. public class Do implements Doable {
public void doSomething(Integer i) { }
public void doSomething(String s) { }
public void doThat (String s) { }
}
Answer: A,B
NEW QUESTION # 40
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.getString(1));
16.System.out.println("Description:" + rs.getString(2));
17.System.out.println("Price:" + rs.getString(3));
18. System.out.println(Quantity:" + rs.getString(4));
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. An exception is thrown at runtime.
- B. The code prints Error.
- C. Compilation fails.
- D. The code prints information about Item 110.
Answer: C
NEW QUESTION # 41
Given:
class Student {
String course, name, city;
public Student (String name, String course, String city) {
this.course = course; this.name = name; this.city = city;
}
public String toString() {
return course + ":" + name + ":" + city;
}
public String getCourse() {return course;}
public String getName() {return name;}
public String getCity() {return city;}
and the code fragment:
List<Student> stds = Arrays.asList(
new Student ("Jessy", "Java ME", "Chicago"),
new Student ("Helen", "Java EE", "Houston"),
new Student ("Mark", "Java ME", "Chicago"));
stds.stream()
.collect(Collectors.groupingBy(Student::getCourse))
.forEach(src, res) -> System.out.println(res));
What is the result?
- A. A compilation error occurs.
- B. [Java EE: Helen:Houston][Java ME: Jessy:Chicago, Java ME: Mark:Chicago]
- C. [Java ME: Jessy:Chicago, Java ME: Mark:Chicago][Java EE: Helen:Houston]
- D. Java EEJava ME
Answer: D
NEW QUESTION # 42
In 2015, daylight saving time in New York, USA, begins on March 8th at 2:00 AM. As a result, 2:00 AM becomes 3:00 AM.
Given the code fragment:
Which is the result?
- A. 2:00 - difference: 1
- B. 4:00 - difference: 3
- C. 4:00 - difference: 2
- D. 3:00 - difference: 2
Answer: C
NEW QUESTION # 43
Given:
and the code fragment:
Assuming candlist contains Candidate objects, which code fragment calculates the average age of candidates from NewYork?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION # 44
Given that version.txt is accessible and contains:
1234567890
and given the code fragment:
What is the result?
- A. 0
- B. The program prints nothing.
- C. 1
- D. 2
Answer: D
NEW QUESTION # 45
Given the code fragment:
What is the result?
- A. Can't logout
- B. Logged out at: 2015-01-12T21:58:00Z
- C. Logged out at: 2015-01-12T21:58:19.880Z
- D. A compilation error occurs at line n1.
Answer: B
NEW QUESTION # 46
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. 10123 Ford10124 BMW
- B. A compilation error occurs.
- C. 10124 BMW10123 Ford
- D. A ClassCastException is thrown at run time.
Answer: D
NEW QUESTION # 47
Given:
What is the result?
- A. A compilation error occurs.
- B. Hi Interface-1
- C. Hi Interface-2
- D. Hi MyClass
Answer: D
NEW QUESTION # 48
Given the code fragment:
Assume that:
The required database driver is configured in the classpath. The appropriate database is accessible with the dbURL, userName, and passWord exists The Employee table has a column ID of type integer and the SQL query matches one record.
What is the result?
- A. Compilation fails at line 15.
- B. Compilation fails at line 14.
- C. The code prints the employee ID.
- D. The code prints Error.
Answer: C
NEW QUESTION # 49
......
Oracle 1z0-809: Java SE 8 Programmer II exam is a highly respected certification in the Java programming community. Java SE 8 Programmer II certification validates the advanced Java programming skills and knowledge of professionals, making them stand out in the competitive job market. 1z1-809 exam covers a wide range of topics in Java programming language and requires candidates to have hands-on experience in Java programming. Passing this certification exam is a significant achievement for professionals looking to advance their careers in the field of Java programming.
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