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Free 1Z0-809 Exam Questions with First Attempt Pass Assurance

Question 1

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: A

Question 2

The last statement inside main(String []) method, increments value of i, which means it is not effectively final and hence compilation error.

//Test.java

package com.udayan.ocp;

class Player {

String name;

int age;

Player() {

this.name = "Virat";

this.age = 29;

}

public int hashCode() {

return 100;

}

public class Test {

public static void main(String[] args) {

System.out.println(new Player());

}

Hexadecimal representation of 100 is 64.

Which of the following option is correct?

Options :

A : Code compiles successfully but throws an exception on executing it

B : Code compiles successfully and on execution always prints "com.udayan.ocp.Player@64" on to the console

C : Code doesn't compile successfully

D : None of the other options

Answer: B

Question 3

Given the code fragment:

Stream<Path> files = Files.walk(Paths.get(System.getProperty(“user.home”)));

files.forEach (fName -> { //line n1

try {

Path aPath = fName.toAbsolutePath(); //line n2

System.out.println(fName + “:”

+ Files.readAttributes(aPath,

Basic.File.Attributes.class).creationTime

());

} catch (IOException ex) {

ex.printStackTrace();

});

What is the result?

Options :

A : All files and directories under the home directory are listed along with their attributes

B : A compilation error occurs at line n1.

C : The files in the home directory are listed along with their attributes

D : A compilation error occurs at line n2.

Answer: A

Question 4

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

1. package com.udayan.ocp;

3. class M {

4. private int num1 = 100;

5. class N {

6. private int num2 = 200;

7. }

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

10. M outer = new M();

11. M.N inner = outer.new N();

12. System.out.println(outer.num1 + inner.num2);

13. }

14. }

Options :

A : 300

B : 200

C : Compilation error

D : 100

Answer: A

Question 5

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;

3. import java.nio.file.Path;

4. import java.nio.file.Paths;

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 :

A : F:\A\B\Book.java

B : FileNotFoundException is thrown at runtime.

C : NoSuchFileException is thrown at runtime.

D : Book.java

Answer: A

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