Java SE 11 Developer (1Z0-819) Practice Test 1

Free Oracle Certified Professional: Java SE 11 Developer (1Z0-819) Practice Test 1

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Welcome to your Java Test - 1

Name

Email

Phone

1. 

Question: Which of the following is/are valid record definition(s)?

Select 3 option(s):

record Student(int id, String... subjects){
@Override
public int id(){
return 10;
}

@Override
public boolean equals(Object obj){
return false;
}
}

record Student(int id, String... subjects){
public void reset(){
id = 0;
subject = null;
}
}

record Student(int id, String... subjects){
private String address;
public void setAddress(String address){
this.address = address;
}
}

record Student(int id, String... subjects) implements java.io.Serializable{
public static final String serialVersionUID = 0;
}

interface Person{
int id();
String name();
}
record Student(int id, String... subjects) implements Person{
public String name(){ return "none"; }
}

abstract record Student(int id, String... subjects) {
}

sealed record Student(int id, String... subjects) {
}

2. 

Question: Which of these expressions will obtain the substring "456" from a string defined by

String str = """
0123\
4567"""?

Select 1 option(s)

str.substring(4, 7)

str.substring(4)

str.substring(5, 7)

str.substring(5, 8)

str.substring(4, 3)

None

3. 

Question: Java's Exception mechanism helps in which of the following ways?

Select 2 option(s)

It allows creation of new exceptions that are custom to a particular application domain.

It improves code because error handling code is clearly separated from the main program logic.

It enhances the security of the application by reporting errors in the logs.

It improves the code because the exception is handled right at the place where it occured.

It provides a vast set of standard exceptions that covers all possible exceptions.

4. 

Question: Given:

//In Data.java
public class Data{
int value;
Data(int value){
this.value = value;
}
}

and the following code fragments:
public void printUsefulData(ArrayList dataList, Predicate p){
for(Data d: dataList){
if(p.test(d)) System.out.println(d.value);
}
}

....
ArrayList al = new ArrayList();
al.add(new Data(1));al.add(new Data(2));al.add(new Data(3));

//INSERT METHOD CALL HERE

Which of the following options can be inserted above so that it will print 3?

Select 2 option(s)

printUsefulData(al, (Data d)-> { return d.value>2; } );

printUsefulData(al, d-> d.value>2 );

printUsefulData(al, (d)-> return d.value>2; );

printUsefulData(al, Data d-> d.value>2 );

printUsefulData(al, d -> d.value>2; );

5. 

Question: Given:

import java.util.*;
class Data{
int value;
public Data(int x){ this.value = x; }
public String toString(){ return ""+value; }
}

class MyFilter {
public boolean test(Data d){
return d.value == 0;
}
}

public class TestClass{

public static void filterData(ArrayList dataList, MyFilter f){
Iterator i = dataList.iterator();
while(i.hasNext()){
if(f.test(i.next())){
i.remove();
}
}
}

public static void main(String[] args) {
ArrayList al = new ArrayList();
Data d = new Data(1); al.add(d);
d = new Data(2); al.add(d);
d = new Data(0); al.add(d);

filterData(al, new MyFilter()); //1

System.out.println(al);
}
}

How can you use a lambda expression to achieve the same result?

Select 1 option(s)

None

6. 

Question: Given the following classes, what will be the output of compiling and running the class Truck?

class Automobile{
public void drive() { System.out.println("Automobile: drive"); }
}

public class Truck extends Automobile{
public void drive() { System.out.println("Truck: drive"); }
public static void main (String args [ ]){
Automobile a = new Automobile();
Truck t = new Truck();
a.drive(); //1
t.drive(); //2
a = t; //3
a.drive(); //4
}
}

//End of Code

Select 1 option(s)

Compiler error at line 3.

Runtime error at line 3.

It will print:
Automobile: drive
Truck: drive
Automobile: drive
in that order.

It will print:
Automobile: drive
Truck: drive
Truck: drive
in that order.

It will print:
Automobile: drive
Automobile: drive
Automobile: drive
in that order.

None

7. 

Question: Given:

public static void main(String[] args) {
Device d1 = new Device(1);
try(d1){
//do some thing with d1
}
}

Identify correct statement(s).

Select 1 option(s)

Device should extend AutoCloseable and override close() method.

Device should implement Closeable and override close() method.

Device should implement Closeable and override autoClose() method.

Device should implement AutoCloseable and override autoClose() method.

Device should implement AutoCloseable and override close() method.

Device should extend AutoCloseable and override autoClose() method.

None

8. 

Question: What will the following code print when compiled and run?

public class DaysTest{

static String[] days = {"monday", "tuesday", "wednesday", "thursday",
"friday", "saturday", "sunday" };

public static void main(String[] args) {

var index = 0;
for(var day : days){

if(index == 3){
break;
}else {
continue;
}
index++;
if(days[index].length()>3){
days[index] = day.substring(0,3);
}
}
System.out.println(days[index]);
}
}

Select 1 option(s)

mon

thu

fri

It will not compile.

It will throw an exception at run time.

None

9. 

Question: What will the following code print when run?

String[] sa = { "charlie", "bob", "andy", "dave" };
var ls = new ArrayList(Arrays.asList(sa));
ls.sort((var a, var b) -> a.compareTo(b));
System.out.println(sa[0]+" "+ls.get(0));

Select 1 option(s)

charlie andy

andy charlie

charlie charlie

andy andy

It will throw an exception at run time.

It will not compile.

None

10. 

Question: What will be the result of attempting to compile and run the following program?

public class TestClass{
public static void main(String args[ ] ){
A o1 = new C( );
B o2 = (B) o1;
System.out.println(o1.m1( ) );
System.out.println(o2.i );
}
}
class A { int i = 10; int m1( ) { return i; } }
class B extends A { int i = 20; int m1() { return i; } }
class C extends B { int i = 30; int m1() { return i; } }

Select 1 option(s)

The program will fail to compile.

Class cast exception at runtime.

It will print 30, 20.

It will print 30, 30.

It will print 20, 20.

None

11. 

Question: Given:

int a = 1 + 2 + 3 * 4;
int b = 2 * 3 + 4;

int total = a + b;

What will be the value of total?

Select 1 option(s)

34

38

29

25

None

12. 

Question: Given:

public class TestClass
{
public static void main(String[] args) {
String s = "/usr/home1/test.txt";
String d = "/usr/home2/test.txt";
//INSERT CODE HERE

}catch(Exception e){ }
}
}

Which of the following code fragments can be inserted in the above code so that the file test.txt can be moved to the destination location even if a file by the same name already esists at the destination location?

Select 1 option(s)

try{
Files.move(Paths.get(s), Paths.get(d), StandardCopyOption.CREATE_NEW);
Files.delete(Paths.get(s));

try{
Files.move(Paths.get(s), Paths.get(d), StandardCopyOption.REPLACE_EXISTING);

try(FileChannel in = new FileInputStream(s).getChannel();
FileChannel out = new FileOutputStream(d).getChannel()){
in.transferTo(0, in.size(), out);
}catch(Exception e){
}

try{
Files.move(Paths.get(s), Paths.get(d));

None

13. 

Question: Consider the following code:

Locale.setDefault(new Locale("es", "ES"));
ResourceBundle rb = ResourceBundle.getBundle("appmessages");
String msg = rb.getString("greetings");
System.out.println(msg);

You have created a valid resource bundle file named appmessages_es_ES.properties that contains 'greetings' property. However, when you run the above code, you get an exception saying,
"java.util.MissingResourceException:
Can't find bundle for base name appmessages, locale es_ES".

What could be the reason?

Select 1 option(s)

appmessages_es_ES.properties is not present in PATH.

appmessages_es_ES.properties is not present in CLASSPATH.

appmessages_es_ES.properties is not specified using -D option on command line.

appmessages_es_ES.properties is not present in JAVA_HOME.

None

14. 

Question: Given that your code is being run in a locale where the language code is fr and country code is CA, which of the following file names represents a valid resource bundle file name?

Select 1 option(s)

MyResource_fr_CA.xml

MyResource_fr_CA.properties

MyResource_fr_CA.java

MyResource_fr_CA.profile

None

15. 

Question: Considering the following program, which of the options are true?

public class FinallyTest{
public static void main(String args[]){
try{
if (args.length == 0) return;
else throw new Exception("Some Exception");
}
catch(Exception e){
System.out.println("Exception in Main");
}
finally{
System.out.println("The end");
}
}
}

Select 2 option(s)

If run with no arguments, the program will only print 'The end'.

If run with one argument, the program will only print 'The end'.

If run with one argument, the program will print 'Exception in Main' and 'The end'.

If run with one argument, the program will only print 'Exception in Main'.

If run with no arguments, the program will not print anything.

If run with no arguments, the program will generate a stack trace on the console.

16. 

Question: Consider the following method:

public Map countWords(Stream wordStream){
Map counts = INSERT CODE HERE
return counts;
}

Given that wordStream is a Stream of words and that this method is supposed to return how many times each word appears in the stream, what can be inserted in the above code?

Select 1 option(s)

wordStream.collect(Collectors.groupingBy(Collectors.counting()));

wordStream.collect(Collectors.groupingBy(String::equals, Collectors.counting()));

wordStream.collect(Collectors.groupingBy(String::toUpperCase, Collectors.counting()));

wordStream.collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));

None

17. 

Question: What will the following code print when compiled and run?

public static void main(String[] args) {
Float f1 = 10.0f;
Float f2 = 0.0f;

Float f3 = null;

double f = 0.0;
try{
f = f1/f2;
System.out.println(f);
f3 = f1/f2;
}catch(Exception e){
System.out.println("Exception");
}
System.out.println(f3.isInfinite());
}

Select 1 option(s)

Exception
false

Exception
true

Exception
< stack trace for a NullPointerException >

Infinity
true

Infinity
Exception
< stack trace for a NullPointerException >

None

18. 

Question: What will the following code print when run?

Period p = Period.between( LocalDate.now(),
LocalDate.of(2022, Month.SEPTEMBER, 1));
System.out.println(p);
Duration d = Duration.between(LocalDate.now(),
LocalDate.of(2022, Month.SEPTEMBER, 1));
System.out.println(d);

Assume that the local time on the system at the time this code is run is 2nd Sep 2022 1:00 AM.

Select 1 option(s)

P-1D
PT-14H-50M

P1D
PT9H10M

P-1D
P-9H-10M

P1D
PT14H50M

It will throw an exception at run time.

None

19. 

Question: Given that a method named Double getPrice(String id) exists and may potentially return null, about which of the following options can you be certain that a run time exception will not be thrown?

Select 2 option(s)

20. 

Question: Which of the following code fragments correctly executes the blog(String data) method of a blogging service that implements api.Blogger interface assuming that you already have a reference to the loader for this service?

Assume that data refers to the data that needs to be blogged.

Select 2 option(s)

try{
Iterator< Blogger > bi = loader.iterator();
while(bi.hasNext()){
Blogger b = bi.next();
b.blog(data);
}
}catch(ServiceConfigurationError e){ }

try{
Iterator< Blogger > bi = loader.services();
while(bi.hasNext()){
Blogger b = bi.next();
b.blog(data);
}
}catch(ServiceConfigurationError e){ }

for(Blogger b : loader.services()){
b.blog(data);
}

try{
Blogger b = loader.getService();
b.blog(data);
}catch(ServiceConfigurationError e){ }

loader.blog(data);

for (Blogger b : loader){
b.blog("Hello from textbook");
}

21. 

Question: Consider the classes shown below:

class A{
public A() { }
public A(int i) { System.out.println(i ); }
}
class B{
static A s1 = new A(1);
A a = new A(2);
public static void main(String[] args){
B b = new B();
A a = new A(3);
}
static A s2 = new A(4);
}

Which is the correct sequence of the digits that will be printed when B is run?

Select 1 option(s)

1 ,2 ,3 4.

1 ,4, 2 ,3

3, 1, 2, 4

2, 1, 4, 3

2, 3, 1, 4

None

22. 

Question: Which of the following statements will print /test.txt when executed on a Unix/Linux system?

Select 1 option(s)

System.out.println(Path.get("/test.txt"));

System.out.println(new Path("/test.txt"));

System.out.println(Paths.get("/", "test.txt"));

System.out.println(Path.toPath("/test.txt"));

System.out.println(Paths.toPath("/test.txt"));

None

23. 

Question: Given:

sealed abstract class Car permits SUV, Sedan{
String name;
Car(String name){
this.name = name;
}
}

final class SUV extends Car{
int milage;
SUV(String name, int milage){
super(name);
this.milage = milage;
}
}

final class Sedan extends Car{
double price;
Sedan(String name, double price){
super(name);
this.price = price;
}
}

public class TestClass
{

public static void main(String args[]) throws Exception
{
Car[] cars = new Car[]{ new SUV("Ford", 5000), new Sedan("Honda", 10000.0),
new SUV("Chevy", 10000), new Sedan("Toyota", 20000.0)};

DoubleSummaryStatistics dss =
Stream.of(cars)
.filter(c->c instanceof SUV)
.collect(Collectors.summarizingDouble(c-> ((SUV)c).milage));

System.out.println(dss.getMax());

String sedans =
Stream.of(cars)
.filter(c->c instanceof Sedan)
.collect(Collectors.mapping(c->c.name, Collectors.joining(",")));


System.out.println(sedans);

}
}

What is the result?

Select 1 option(s)

10000
Honda,Toyota

10000.0
Honda,Toyota

10000.0
Ford,Honda,Chevy,Toyota

ClassCastException at run time.

Compilation failure.

None

24. 

Question: Consider the following code snippet:

for(var i=INT1; i<INT2; i++){
System.out.println(i);
}

INT1 and INT2 can be any two integers.

Which of the following will produce the same result?

Select 1 option(s)

for(int i=INT1; i<INT2; System.out.println(++i));

for(int i=INT1; i++<INT2; System.out.println(i));

int i=INT1; while(i++<INT2) { System.out.println(i); }

int i=INT1; do { System.out.println(i); }while(i++<INT2);

None of these.

None

25. 

Question: Identify correct statement(s) regarding the benefit of using PreparedStatement over Statement.

Select 1 option(s)

PreparedStatement offers protection against SQL injection attacks.

PreparedStatement allows transactions to span across multiple databases.

PreparedStatement allows easier customization of joins at run time.

PreparedStatement allows BLOB and CLOB on all databases.

None

26. 

Question: Consider the following program:

import java.io.FileReader;
import java.io.FileWriter;

public class ClosingTest {
public static void main(String[] args) throws Exception {
try(FileReader fr = new FileReader("c:\\temp\\license1.txt");
FileWriter fw = new FileWriter("c:\\temp\\license2.txt") )
{
int ch = -1;
while( (ch = fr.read()) != -1){
fw.write(ch);
}
}
}
}

Identify the correct statements.

Select 1 option(s)

The FileWriter object will always be closed before the FileReader object.

The order of the closure of the FileWriter and FileReader objects is platform dependent and should not be relied upon.

The FileWriter object will not be closed if an exception is thrown while closing the FileReader object.

This is not a fail safe approach to managing resources because in certain situations one or both of the resources may be left open after the end of the try block.

None

27. 

Question: Which of the following lambda expressions can be used to invoke a method that accepts a java.util.function.Predicate as an argument?

Select 2 option(s)

x -> System.out.println(x)

x -> System.out.println(x);

x -> x == null

() -> true

x->true

28. 

Question: What is wrong with the following code written in a single file named TestClass.java?

class SomeThrowable extends Throwable { }
class MyThrowable extends SomeThrowable { }
public class TestClass{
public static void main(String args[]) throws SomeThrowable{
try{
m1();
}catch(SomeThrowable e){
throw e;
}finally{
System.out.println("Done");
}
}
public static void m1() throws MyThrowable{
throw new MyThrowable();
}
}

Select 1 option(s)

The main declares that it throws SomeThrowable but throws MyThrowable.

You cannot have more than 2 classes in one file.

The catch block in the main method must declare that it catches MyThrowable rather than SomeThrowable.

There is nothing wrong with the code and Done will be printed.

None

29. 

Question: Consider the following code snippet:

void m1() throws Exception{
try{
// line1
}
catch (IOException e){
throw new SQLException();
}
catch(SQLException e){
throw new InstantiationException();
}
finally{
throw new CloneNotSupportedException();
// CloneNotSupportedException is a checked exception.
}
}

Which of the following statements are true?

Select 2 option(s)

If IOException gets thrown at line1, then the whole method will end up throwing SQLException.

If IOException gets thrown at line1, then the whole method will end up throwing CloneNotSupportedException.

If IOException gets thrown at line1, then the whole method will end up throwing InstantiationException.

If no exception is thrown at line1, then the whole method will end up throwing CloneNotSupportedException.

If SQLException gets thrown at line1, then the whole method will end up throwing InstantiationException.

30. 

Question: Given:

Connection con = DriverManager.getConnection(dbURL);
con.setAutoCommit(false);
String updateString =
"update SALES " +
"set T_AMOUNT = 100 where T_NAME = 'BOB'";
Statement stmt = con.createStatement();
stmt.executeUpdate(updateString);
//INSERT CODE HERE

What statement should be added to the above code so that the update is committed to the database?

Select 1 option(s)

stmt.commit();

con.commit();

stmt.commit(true);

con.commit(true);

No code is necessary.

None

31. 

Question: Given:

double amount = 200_00.00;
NumberFormat nf1 = NumberFormat.getCurrencyInstance(Locale.US);
NumberFormat nf2 = NumberFormat.getCompactNumberInstance(Locale.US, Style.SHORT);
System.out.println(nf1.format(amount));
System.out.println(nf2.format(amount));

What will be the output?

Select 1 option(s)

$20,000.00
20000

$20,000.00
20K

$20,000.00
200000.00

20,000.00
20000

None

32. 

Question: Which of the following are benefits of ArrayList over an array?

Select 1 option(s)

You do not have to worry about the size of the ArrayList while appending elements.

It consumes less memory space.

You do not have to worry about thread safety.

It allows you to write type safe code.

None

33. 

Question: Consider the following classes:

class A implements Runnable{ ...}
class B extends A implements Observer { ...}
(Assume that Observer has no relation to Runnable.)

and the declarations :

A a = new A() ;
B b = new B();

Which of the following Java code fragments will compile and execute without throwing exceptions?

Select 2 option(s)

Object o = a; Runnable r = o;

Object o = a; Runnable r = (Runnable) o;

Object o = a; Observer ob = (Observer) o ;

Object o = b; Observer o2 = o;

Object o = b; Runnable r = (Runnable) b;

34. 

Question: Given:

var sList = new CopyOnWriteArrayList();

Which of the following statements are correct?

Select 1 option(s)

Student class must be Cloneable or Serializable.

Student objects retrieved from sList are thread safe.

Multiple threads can get Student objects from sList but can't add to it in a thread safe manner simultaneously.

Multiple threads can safely add and remove objects from sList simultaneously.

Any code that adds objects to sList must be synchronized but code that gets objects need not be.

If a thread tries to add an object to it while another is iterating through the list, the second thread may get ConcurrentModificationException.

You cannot add null to sList.

None

35. 

Question: What will the following program print when run?

public class Operators{

public static int operators(){
int x1 = -4;
int x2 = x1--;
int x3 = ++x2;
if(x2 > x3){
--x3;
}else{
x1++;
}
return x1 + x2 + x3;
}
public static void main(String[] args) {
System.out.println(operators());
}
}

Select 1 option(s)

-9

-10

-11

-12

None

36. 

Question: You want to use a third party JDBC driver for a database. Which of the following actions must you take to retrieve a Connection using that driver in your JDBC program?

Select 2 option(s)

Put the driver jar in the class path.

Load the driver class using Class.forName.

Create an instance of the Driver class using the new keyword.

Retrieve a connection using DriverManager.getConnection.

Load the driver class using Class.forName and then retrieve a connection using DriverManager.getConnection.

37. 

Question: Given:

public List getList(){
*INSERT CODE HERE*
}

What can be inserted in the above code?

Select 3 option(s)

return new ArrayList< Integer >();

return new ArrayList< Number >();

return new ArrayList< Object >();

return new ArrayList();

return new ArrayList< ? super Number >();

return new ArrayList< ? extends Number >();

38. 

Question: What will the following code print when run?

import java.nio.file.Path;
import java.nio.file.Paths;

public class PathTest {
static Path p1 = Paths.get("c:\\main\\project\\Starter.java");

public static String getData(){
String data = p1.getName(0).toString();
return data;
}

public static void main(String[] args) {
System.out.println(getData());
}
}

Select 1 option(s)

IllegalArgumentException

ArrayIndexOutOfBoundsException

c:\

c:

main

None

39. 

Question: Given:

class Base{
public Collection getCollection(T t, Integer n)
{
return new ArrayList();
}
}

class Derived extends Base{

//public List getCollection(T t, Integer m){ return new ArrayList(); }; //1

//public Stream getCollection(T t, Integer m){ return new ArrayList(); }; //2

//public void getCollection(T t, Integer m){ return new ArrayList(); }; //3

//public List getCollection(String t, Integer m){ return new ArrayList(); };//4
}

Identify correct statements about the methods defined in Derived assuming they are uncommented one at a time individually.

Select 1 option(s)

//1, //2, and //3 correctly override the method in Base.

//2, //3, and //4 correctly overload the method in Base.

//2 and //3 correctly override the method in Base.

//1 correctly overloads while //4 correctly overrides the method in Base.

//1 correctly overrides the method in Base.

//1 and //4 cannot be inserted in the code at the same time.

None

40. 

Question: Which of these statements are true?

Select 2 option(s)

If a RuntimeException is not caught, the method will terminate and normal execution of the thread will resume.

An overriding method must declare that it throws the same exception classes as the method it overrides.

The main method of a program can declare that it throws checked exceptions.

A method declaring that it throws a certain exception class may throw instances of any subclass of that exception class.

finally blocks are executed if and only if an exception gets thrown while inside the corresponding try block.

41. 

Question: Your application is packaged in myapp.jar and depends on a jar named datalayer.jar, which in turn depends on mysql-connector-java-8.0.11.jar. The following packages exist in these jars:

myapp.jar: com.abc.myapp
datalayer.jar: com.abc.datalayer
mysql-connector-java-8.0.11.jar: com.mysql.jdbc

You want to use bottom up approach for migrating your app to a modular app. Which of the following is required before you can do this?

Select 1 option(s)

Mysql driver jar and datalayer.jar must first be converted into modular jars.

datalayer.jar must first be converted into modular jar. The mysql jar need not be converted.

The mysql jar must first be converted into modular jar. The datalayer.jar need not be converted.

Neither datalayer nor mysql driver need to be converted into modular jars.

None

42. 

Question: Which of the following statements are correct about --jdk-internals option of jdeps tool when run on a jar file or a class file?

Select 2 option(s)

It analyzes all classes of the given jar file for class level dependence on Java API.

It analyzes all classes of the given jar file for class level dependence on jdk's deprecated API. If any such dependence is found, it is printed with a suggestion for replacement.

It analyzes all classes of the given jar file for class level dependence on jdk's internal API. If any such dependence is found, it is printed with a suggestion for replacement.

It analyzes all input modules and list all jdk internal modules on which the input modules depend. If any such dependence is found, it is printed with a suggestion for replacement.

It can only be used with -summary or -verbose options.

It performs static analysis.

43. 

Question: What will the following code print when compiled and run?

List ls = Arrays.asList(1, 2, 3);
ls.stream().forEach(System.out::print)
.map(a->a*2)
.forEach(System.out::print);

Select 1 option(s)

123

246

Compilation failure

exception at run time

None

44. 

Question: What will the following program print?

public class TestClass{
static String str;
public static void main(String[] args){
System.out.println(str);
}
}

Select 1 option(s)

It will not compile.

It will compile but throw an exception at runtime.

It will print 'null' (without quotes).

It will print nothing.

None of the above.

None

45. 

Question: What will be printed when the following code is compiled and run?

public class LoadTest{

public static void main(String[] args) throws Exception {
LoadTest t = new LoadTest();
int i = t.getLoad();
double d = t.getLoad();
System.out.println( i + d );
}

public int getLoad() {
return 1;
}

public double getLoad(){
return 3.0;
}

}

Select 1 option(s)

13.0

4.0

4

The code will not compile.

None

46. 

Question: Given:

List dList = Arrays.asList(10.0, 12.0);
dList.stream().forEach(x->{ x = x+10; });
dList.stream().forEach(d->System.out.println(d));

What will it print when compiled and run?

Select 1 option(s)

A compilation error will occur.

10.0
12.0

20.0
22.0

It will compile but throw an exception at run time.

None

47. 

Question: Which jdeps option(s) is/are used to include dependent nonmodular jar files?

Note: We have seen some really vague and ill-designed questions without complete information on jdeps in the exam. It is anybody's guess as to what exactly are they testing.

Based on the given options, our guess is that in this question they are just checking whether you know that -cp, -classpath, and --class-path are equivalent options and the nonmodular jars should be put on classpath instead of module-path.

Select 3 option(s)

jdeps -cp file1.jar;file2.jar app.jar

jdeps --upgrade-module-path file1.jar;file2.jar app.jar

jdeps --class-path file1.jar;file2.jar app.jar

jdeps -classpath file1.jar;file2.jar app.jar

jdeps app.jar

jdeps --module-path file1.jar;file2.jar app.jar

jdeps file1.jar;file2.jar app.jar

48. 

Question: What will the following program snippet print?

int i=0, j=11;
do{
if(i > j) { break; }
j--;
}while( ++i < 5);
System.out.println(i+" "+j);

Select 1 option(s)

5 5

5 6

6 6

6 5

4 5

None

49. 

Question: Identify correct statements about the modular JDK.

Select 3 option(s)

The foundational APIs of the Java SE platform are found in java.base module.

The modular JDK is composed of two modules - the java module and the jdk module.

JDK is divided into a set of modules that can be combined at compile time, build time, and run time into a variety of configurations.

The modular JDK is divided of two kinds of modules - the standard modules and the non-standard modules.

50. 

Question: Given the following code fragment:

List cities = List.of("USA", "Netherlands", "UK", "India", "France");
Comparator c = (a, b)->a.compareTo(b); //1
Comparator cr = c.reversed();//2
String joined = cities.stream().sorted(cr).collect(Collectors.joining(", "));//3
System.out.println(joined);

What is the result?

Select 1 option(s)

Compilation error at //1.

Compilation error at //2.

Compilation error at //3.

USA, UK, Netherlands, India, France

USA, Netherlands, UK, India, France

France, India, Netherlands, UK, USA

None

51. 

Question: What will be the result of attempting to compile and run class B?

class A{
final int fi = 10;
}
public class B extends A{
int fi = 15;
public static void main(String[] args){
B b = new B();
b.fi = 20;
System.out.println(b.fi);
System.out.println( ( (A) b ).fi );
}
}

Select 1 option(s)

It will not compile.

It will print 10 and then 10

It will print 20 and then 20

It will print 10 and then 20

It will print 20 and then 10

None

52. 

Question: Given:

List ls = Arrays.asList(10, 47, 33, 23);

int max = //INSERT code HERE
System.out.println(max); //1

Which of the following options can be inserted above so that it will print the largest number in the input stream?

Select 1 option(s)

None

53. 

Question: What will the following lines of code print.

java.time.LocalDate dt =
java.time.LocalDate.parse("2015-01-01")
.minusMonths(1).minusDays(1).plusYears(1);
System.out.println(dt);

Select 1 option(s)

Compilation error.

Exception at run time.

2015-12-31

2015-11-30

None

54. 

Question: Given the following directory structure:

finmodule:
p1:
InterestCalculator.java
p2:
FinMath.java

and the following definition:

//in file finmodule/p1/InterestCalculator.java
package p1;
public sealed class InterestCalculator permits CompoundIntCalculator{
}

Which of the following is/are valid definition(s) of CompoundIntCalculator class?

Select 3 option(s)

package p1;
public class CompoundIntCalculator extends InterestCalculator{ }

package p1;
non-sealed abstract class CompoundIntCalculator extends InterestCalculator{ }

package p1.p2;
public non-sealed class CompoundIntCalculator extends InterestCalculator{ }

package p1;
final class CompoundIntCalculator extends InterestCalculator{ }

package p1.p2;
public sealed class CompoundIntCalculator extends InterestCalculator{ }

package p1;
public non-sealed class CompoundIntCalculator extends InterestCalculator{ }

55. 

Question: Given:

enum Title
{
MR("Mr."), MS1("Ms."), MS2("Ms.");
private String title;
private Title(String s){
title = s;
}
}

public class TestClass{
public static void main(String[] args) {

ts.add(Title.MS2);
ts.add(Title.MR);
ts.add(Title.MS1);
for(Title t : ts){
System.out.println(t);
}
}
}

What will be the output when TestClass is compiled and run?

Select 1 option(s)

It will print MR, MS1, MS2, but the order is unpredictable.

MS2, MR, MS1,

MR, MS1, MS2,

It will not compile.

None

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