Java SE 8 Programmer II 1z0-809 Exam Questions with Experts Answers Updated Recently

Given:

class Worker extends Thread {

CyclicBarrier cb;

public Worker(CyclicBarrier cb) { this.cb = cb; }

public void run () {

try {

cb.await();

System.out.println(“Worker…”);

} catch (Exception ex) { }

}

}

class Master implements Runnable { //line n1

public void run () {

System.out.println(“Master…”);

}

}

and the code fragment:

Master master = new Master();

//line n2

Worker worker = new Worker(cb);

worker.start();

You have been asked to ensure that the run methods of both the Worker and Master classes are executed.

Which modification meets the requirement?

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 fragment:

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

//line n2

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

What is the result?

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!?