1z0-809 Sample Questions Answers

You have been asked to create a ResourceBundle which uses a properties file to localize an application.

Which code example specifies valid keys of menu1 and menu2 with values of File Menu and View Menu?

Given the code fragment:

BiFunction val = (t1, t2) -> t1 + t2;//line n1

System.out.println(val.apply(10, 10.5));

What is the result?

Given the code fragment:

Stream> iStr= Stream.of (

Arrays.asList (“1”, “John”),

Arrays.asList (“2”, null)0;

Stream< nInSt = iStr.flatMapToInt ((x) -> x.stream ());

nInSt.forEach (System.out :: print);

What is the result?

Given the code fragments:

class ThreadRunner implements Runnable {

public void run () { System.out.print (“Runnable”) ; }

}

class ThreadCaller implements Callable {

Public String call () throws Exception {return “Callable”; )

}

and

ExecutorService es = Executors.newCachedThreadPool ();

Runnable r1 = new ThreadRunner ();

Callable c1 = new ThreadCaller ();

// line n1

es.shutdown();

Which code fragment can be inserted at line n1 to start r1 and c1 threads?

Given the Greetings.properties file, containing:

and given:

What is the result?

Given:

public class product {

int id; int price;

public Product (int id, int price) {

this.id = id;

this.price = price;

}

public String toString() { return id + “:” + price; }

}

and the code fragment:

List products = Arrays.asList(new Product(1, 10),

new Product (2, 30),

new Product (2, 30));

Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> {

p1.price+=p2.price;

return new Product (p1.id, p1.price);});

products.add(p);

products.stream().parallel()

.reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)

.ifPresent(System.out: :println);

What is the result?

Given the code fragments:

and

What is the result?

Given the code fragment:

What is the result?

Given:

and the code fragment:

What is the result?

Given the content:

and given the code fragment:

Which two code fragments, when inserted at line 1 independently, enable the code to print “Wie geht’s?”

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 table has a column ID of type integer and the SQL query matches one record.

What is the result?

Given the code fragments:

and

Which two modifications enable to sort the elements of the emps list? (Choose two.)

Given the code fragment:

Which two code fragments, when inserted at line n1 independently, result in the output PEEK: Unix?

Given the code fragments:

class Employee {

Optional

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!?

Given:

final class Folder {//line n1

//line n2

public void open () {

System.out.print(“Open”);

}

}

public class Test {

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

try (Folder f = new Folder()) {

f.open();

}

}

}

Which two modifications enable the code to print Open Close? (Choose two.)

Given the code fragments:

and

What is the result?

Given the content of Operator.java, EngineOperator.java, and Engine.java files:

and the code fragment:

What is the result?

Given the code fragment:

What is the result?

Given the code fragment:

What is the result?

Given the code fragment:

Assume that the value of now is 6:30 in the morning.

What is the result?

Given the code fragment:

Assume that dbURL, userName, and password are valid.

Which code fragment can be inserted at line n1 to enable the code to print Connection Established?

Which statement is true about the single abstract method of the java.util.function.Function interface?

Given the code fragment:

Which modification enables the code to print Price 5 New Price 4?

Given the content:

and the code fragment:

What is the result?

Given the definition of the Emp class:

public class Emp

private String eName;

private Integer eAge;

Emp(String eN, Integer eA) {

this.eName = eN;

this.eAge = eA;

}

public Integer getEAge () {return eAge;}

public String getEName () {return eName;}

}

and code fragment:

Listli = Arrays.asList(new Emp(“Sam”, 20), New Emp(“John”, 60), New Emp(“Jim”, 51));

Predicate agVal = s -> s.getEAge() <= 60;//line n1

li = li.stream().filter(agVal).collect(Collectors.toList());

Stream names = li.stream()map.(Emp::getEName);//line n2

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

What is the result?