Pass the Oracle Java SE 1z0-809 Questions and answers with ExamsMirror

Given the code fragment:

LocalDate valentinesDay =LocalDate.of(2015, Month.FEBRUARY, 14);

LocalDate nextYear = valentinesDay.plusYears(1);

nextYear.plusDays(15); //line n1

System.out.println(nextYear);

What is the result?

Given the code fragment:

What is the result?

Given the code fragment:

Map books = new TreeMap<>();

books.put (1007, “A”);

books.put (1002, “C”);

books.put (1001, “B”);

books.put (1003, “B”);

System.out.println (books);

What is the result?

Given:

class Book {

int id;

String name;

public Book (int id, String name) {

this.id = id;

this.name = name;

}

public boolean equals (Object obj) { //line n1

boolean output = false;

Book b = (Book) obj;

if (this.id = = b.id) {

output = true;

}

return output;

}

}

and the code fragment:

Book b1 = new Book (101, “Java Programing”);

Book b2 = new Book (102, “Java Programing”);

System.out.println (b1.equals(b2)); //line n2

Which statement is true?

Given:

public class Customer {

private String fName;

private String lName;

private static int count;

public customer (String first, String last) {fName = first, lName = last;

++count;}

static { count = 0; }

public static int getCount() {return count; }

}

public class App {

public static void main (String [] args) {

Customer c1 = new Customer(“Larry”, “Smith”);

Customer c2 = new Customer(“Pedro”, “Gonzales”);

Customer c3 = new Customer(“Penny”, “Jones”);

Customer c4 = new Customer(“Lars”, “Svenson”);

c4 = null;

c3 = c2;

System.out.println (Customer.getCount());

}

}

What is the result?

Given:

What change should you make to guarantee a single order of execution (printed values 1 -100 in order)?

Given:

class Vehicle implements Comparable{

int vno;

String name;

public Vehicle (int vno, String name) {

this.vno = vno,;

this.name = name;

}

public String toString () {

return vno + “:” + name;

}

public int compareTo(Vehicle o) {

return this.name.compareTo(o.name);

}

and this code fragment:

Set vehicles = new TreeSet <> ();

vehicles.add(new Vehicle (10123, “Ford”));

vehicles.add(new Vehicle (10124, “BMW”));

System.out.println(vehicles);

What is the result?

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:

public class Counter {

public static void main (String[ ] args) {

int a = 10;

int b = -1;

assert (b >=1) : “Invalid Denominator”;

int с = a / b;

System.out.println (c);

}

}

What is the result of running the code with the –da option?

Given the code fragment:

UnaryOperator uo1 = s -> s*2;//line n1

List loanValues = Arrays.asList(1000.0, 2000.0);

loanValues.stream()

.filter(lv -> lv >= 1500)

.map(lv -> uo1.apply(lv))//line n2

.forEach(s -> System.out.print(s + “ “));

What is the result?