Free Oracle 1z0-819 Practice Exam with Questions & Answers | Set: 5

Change Line 1 to an abstract class:public abstract class API {

Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;

Change Line 1 to a class:public class API {

Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {

Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;

Take extra care

The program prints nothing.

Take extra care

Take extra care

An exception is thrown at runtime

.map(Employee::getLocality)

.distinct()

.count();

map(e −> e.getLocality())

.count();

.map(e −> e.getLocality())

.collect(Collectors.toSet())

.count();

.filter(Employee::getLocality)

.distinct()

.count();

2,34,34,5

2,34,54,5

2,54,54,5

2,34,54,3

public void x() { }

public void z() { }

public void x() { }

protected void y() { super.y(); }

public void z() { }

void x() { }

public void y() { }

public void z() { }

void x() { super.y(); }

public void z() { }

void x() { }

public void z() { }

Create a method that validates the hostName and portNumber parameters before opening the socket.

Make enableService private.

Enclose the call to new Socket In an AccessController.doPrivileged block.

privilege escalation attack against the OS running the customer code

SQL injection attack against the specified host and port

XML injection attack against any mlib server

none because the customer code base must also be granted SocketPermission

denial of service attack against any reachable machine

An ArrayIndexOutofBoundsException is thrown at runtime.

The compilation fails.

gh ij kl

gj hk il

ghi jkl

jdbe.mysql.com://localhost:3306/database

<a href="http://localhost.mysql.com:3306/database">http://localhost.mysql.com:3306/database</a>

<a href="http://localhost">http://localhost</a> mysql.jdbc:3306/database

jdbc:mysql://localhost:3306/database

protected void walk(){}

void walk(){}

abstract void walk();

private void walk(){}

public abstract void walk();