EXPERTY DESIGNED 1Z0-809 PRACTICE TEST

Oracle 1Z0-809 Exam Questions
Total Questions: 469
Java SE 8 Programmer II
Updated On: Aug 21, 2019
Page : 1-47
Question 1

F: is accessible for reading and below is the directory structure for F:

1. F:.

2. └───A

3.     └───B

4.         └───C

5.                 Book.java

'Book.java' file is available under 'C' directory.

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.nio.file.Path;

4. import java.nio.file.Paths;

5.  

6. public class Test {

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

8.         Path file = Paths.get("F:\\A\\B\\Book.java");

9.         System.out.println(file.toAbsolutePath());

10.     }

11. }

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

Options :
Answer: A

Question 2

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

1. package com.udayan.ocp;

2.  

3. class X {

4.     class Y {

5.         private void m() {

6.             System.out.println("INNER");

7.         }

8.     }

9.     

10.     public void invokeInner() {

11.         Y obj = new Y(); //Line 9

12.         obj.m(); //Line 10

13.     }

14. }

15.  

16. public class Test {

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

18.         new X().invokeInner();

19.     }

20. }

Options :
Answer: C

Question 3

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 4

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?

Options :
Answer: A

Question 5

Given code of Test.java file:

1. package com.udayan.ocp;

2.  

3. interface Printer1 {

4.     default void print() {

5.         System.out.println("Printer1");

6.     }

7. }

8.  

9. class Printer2 {

10.     public void print() {

11.         System.out.println("Printer2");

12.     }

13. }

14.  

15. class Printer extends Printer2 implements Printer1 {

16.  

17. }

18.  

19. public class Test {

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

21.         Printer printer = new Printer();

22.         printer.print();

23.     }

24. }

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

Options :
Answer: D

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