Oracle 1Z0-809 Exam Dumps

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?

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Given the code fragment:

List doubles = Arrays.asList (100.12, 200.32);

DoubleFunction funD = d --> d + 100.0;

doubles.stream (). forEach (funD); // line n1

doubles.stream(). forEach(e --> System.out.println(e)); // line n2

What is the result?

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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() > 50;//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?

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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?

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You want to create a singleton class by using the Singleton design pattern.

Which two statements enforce the singleton nature of the design? (Choose two.)

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