Online 1Z0-809 Practice Test

Question 1

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.util.*;

4.

5. public class Test {

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

7. NavigableMap map = new TreeMap<>();

8. map.put(25, "Pune");

9. map.put(32, "Mumbai");

10. map.put(11, "Sri Nagar");

11. map.put(39, "Chennai");

12.

13. System.out.println(map.headMap(25, true));

14. }

15. }

Options :

A : {25=Pune, 32=Mumbai, 39=Chennai}

B : {32=Mumbai, 39=Chennai}

C : {11=Sri Nagar, 25=Pune}

D : {11=Sri Nagar}

Answer: C

Question 2

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 :

A :

Searching…

B :

Searching…

C :

Searching…

D :

A compilation error occurs.

Answer: C

Question 3

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.util.stream.Stream;

4.

5. public class Test {

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

7. System.out.println(Stream.of(10, 0, -10).sorted().findAny().orElse(-1));

8. }

9. }

Which of the following statements are true about the execution of Test class?

Select 2 options.

Options :

A : It will never print -1 on to the console.

B : It can print any number from the stream.

C : It will always print -10 on to the console.

D : It will always print 0 on to the console.

E : It will always print 10 on to the console.

Answer: A,B

Question 4

Given the code fragment:

Path p1 = Paths.get(“/Pics/MyPic.jpeg”);

System.out.println (p1.getNameCount() +

“:” + p1.getName(1) +

“:” + p1.getFileName());

Assume that the Pics directory does NOT exist.

What is the result?

Options :

A : An exception is thrown at run time

B : 2:MyPic.jpeg: MyPic.jpeg

C : 3:.:MyPic.jpeg

D : 2:Pics: MyPic.jpeg

Answer: B

Question 5

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 and Customer tables are available and each table has id column with a few records and

the SQL queries are valid.

What is the result of compiling and executing this code fragment?

Options :

A : The program prints employee IDs.

B : The program prints customer IDs.

C : The program prints Exception.

D : compilation fails on line 13.

Answer: C

EXPERTY DESIGNED 1Z0-809 PRACTICE TEST