1z0-809 Exam Dumps - Oracle Java SE Questions and Answers

Given:

public class Canvas implements Drawable {

public void draw () { }

}

public abstract class Board extends Canvas { }

public class Paper extends Canvas {

protected void draw (int color) { }

}

public class Frame extends Canvas implements Drawable {

public void resize () { }

}

public interface Drawable {

public abstract void draw ();

}

Which statement is true?

Given:

Which option fails?

Given the code fragment:

List empDetails = Arrays.asList(“100, Robin, HR”, “200, Mary, AdminServices”,“101, Peter, HR”);

empDetails.stream()

.filter(s-> s.contains(“r”))

.sorted()

.forEach(System.out::println); //line n1

What is the result?

Given the content of /resourses/Message.properties:

welcome1=”Good day!”

and given the code fragment:

Properties prop = new Properties ();

FileInputStream fis = new FileInputStream (“/resources/Message.properties”);

prop.load(fis);

System.out.println(prop.getProperty(“welcome1”));

System.out.println(prop.getProperty(“welcome2”, “Test”));//line n1

System.out.println(prop.getProperty(“welcome3”));

What is the result?

Given the code fragment:

public static void main (String [ ] args) throws IOException {

BufferedReader br = new BufferedReader (new InputStremReader (System.in));

System.out.print (“Enter GDP: “);

//line 1

}

Which code fragment, when inserted at line 1, enables the code to read the GDP from the user?

Given the code fragment:

List list1 = Arrays.asList(10, 20);

List list2 = Arrays.asList(15, 30);

//line n1

Which code fragment, when inserted at line n1, prints 10 20 15 30?

Given:

Which two interfaces can you use to create lambda expressions? (Choose two.)

Given the code fragment:

What is the result?

Given the definition of the Vehicle class:

Class Vehhicle {

int distance;//line n1

Vehicle (int x) {

this distance = x;

}

public void increSpeed(int time) {//line n2

int timeTravel = time;//line n3

class Car {

int value = 0;

public void speed () {

value = distance /timeTravel;

System.out.println (“Velocity with new speed”+value+”kmph”);

}

}

new Car().speed();

}

}

and this code fragment:

Vehicle v = new Vehicle (100);

v.increSpeed(60);

What is the result?

Given the code fragments:

and

What is the result?