EXPERTY DESIGNED 1Z0-809 PRACTICE TEST

Oracle 1Z0-809 Exam Questions
Total Questions: 469
Java SE 8 Programmer II
Updated On: Jul 08, 2025
Page : 1-47
Question 1

Which of the following code will create/return a Locale object for the JVM, on which your code is running?


Options :
Answer: B

Question 2

Given:
class FuelNotAvailException extends Exception { }
class Vehicle {
 void ride() throws FuelNotAvailException { //line n1
 System.out.println(“Happy Journey!”);
 }
}
class SolarVehicle extends Vehicle {
 public void ride () throws Exception { //line n2
 super ride ();
 }
}
and the code fragment:
public static void main (String[] args) throws FuelNotAvailException, Exception
 {
 Vehicle v = new SolarVehicle ();
 v.ride();
}
Which modification enables the code fragment to print Happy Journey!?

Options :
Answer: B

Question 3

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.List;

4. import java.util.Map;

5. import java.util.stream.Collectors;

6. import java.util.stream.Stream;

7.  

8. class Certification {

9.     String studId;

10.     String test;

11.     int marks;

12.  

13.     Certification(String studId, String test, int marks) {

14.         this.studId = studId;

15.         this.test = test;

16.         this.marks = marks;

17.     }

18.  

19.     public String toString() {

20.         return "{" + studId + ", " + test + ", " + marks + "}";

21.     }

22.  

23.     public String getStudId() {

24.         return studId;

25.     }

26.  

27.     public String getTest() {

28.         return test;

29.     }

30.  

31.     public int getMarks() {

32.         return marks;

33.     }

34. }

35.  

36. public class Test {

37.     public static void main(String[] args) {

38.         Certification c1 = new Certification("S001", "OCA", 87);

39.         Certification c2 = new Certification("S002", "OCA", 82);

40.         Certification c3 = new Certification("S001", "OCP", 79);

41.         Certification c4 = new Certification("S002", "OCP", 89);

42.         Certification c5 = new Certification("S003", "OCA", 60);

43.         Certification c6 = new Certification("S004", "OCA", 88);

44.  

45.         Stream stream = Stream.of(c1, c2, c3, c4, c5, c6);

46.         Map> map =

47.                 stream.collect(Collectors.partitioningBy(s -> s.equals("OCA")));

48.         System.out.println(map.get(true));

49.     }

50. }

What will be the result of compiling and executing Test class?

Options :
Answer: A

Question 4

Given the code fragment:
List<String> empDetails = Arrays.asList(“100, Robin, HR”,
 “200, Mary, AdminServices”,
 “101, Peter, HR”);
empDetails.stream()
 .filter(s-> s.contains(“1”))
 .sorted()
 .forEach(System.out::println); //line n1
What is the result?

Options :
Answer: A

Question 5

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.Arrays;

4. import java.util.Comparator;

5. import java.util.List;

6.  

7. class Person {

8.     private String firstName;

9.     private String lastName;

10.  

11.     public Person(String firstName, String lastName) {

12.         this.firstName = firstName;

13.         this.lastName = lastName;

14.     }

15.  

16.     public String getFirstName() {

17.         return firstName;

18.     }

19.  

20.     public String getLastName() {

21.         return lastName;

22.     }

23.  

24.     public String toString() {

25.         return "{" + firstName + ", " + lastName + "}";

26.     }

27. }

28.  

29. public class Test {

30.     public static void main(String[] args) {

31.         List list = Arrays.asList(

32.                 new Person("Tom", "Riddle"),

33.                 new Person("Tom", "Hanks"),

34.                 new Person("Yusuf", "Pathan"));

35.         list.stream().sorted(Comparator.comparing(Person::getFirstName).reversed()

36.                 .thenComparing(Person::getLastName)).forEach(System.out::println);

37.     }

38. }

What will be the result of compiling and executing Test class?

Options :
Answer: A

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