Java Standard Test 4 – 2025

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Welcome to your Standard Test 4 - 2025

Name

Phone

Q1. Identify correct statements about the following code:

interface Readable{ }

sealed class Document implements Readable permits Book{ }

non-sealed class Book implements Readable { }

final class Journal extends Book{ }

Select 2 option(s):

Both Document and Book will cause compilation errors.

All three classes Document, Book, and Journal will cause compilation errors.

Making the Book class extend Document will eliminate all compilation errors.

Adding an extends Document clause to Book and removing the extends Book clause from Journal will eliminate all compilation errors.

Only the Journal class will cause compilation error.

Making the Book class extend Document will cause Journal class to fail compilation.

Q2. Assuming that the directory /works/ocpjp/code exists but /works/ocpjp/code/sample does not exist, what will the following code output?

Path d1 = Paths.get("/works");
Path d2 = d1.resolve("ocpjp/code"); //1
d1.resolve("ocpjp/code/sample"); //2
d1.toAbsolutePath(); //3
System.out.println(d1);
System.out.println(d2);

Select 1 option(s):

An exception at //2.

An exception at //3.

\works
\works\ocpjp\code

\works
<some path that is system dependent>

None

Q3. What will the following code print?

Instant ins = Instant.parse("2024-06-25T06:43:30.00z");
ins.plus(10, ChronoUnit.HOURS);
System.out.println(ins.plus(-10, ChronoUnit.HOURS));

Select 1 option(s):

2024-06-24T20:43:30Z

2024-06-25T06:43:30Z

2024-06-24T10:43:30Z

2024-06-25T16:43:30Z

An exception will be thrown at run time.

None

Q4. What can be inserted at //2 so that 6 will be printed by the following code?

AtomicInteger ai = new AtomicInteger(5);
//2 INSERT CODE HERE
System.out.println(x);

Select 2 option(s):

int x = ai.increment();

int x = ai.getAndIncrement();

int x = ai + 1;

int x = ai.incrementAndGet();

int x = ai.addAndGet(1);

int x = ai.getAndSet(6);

Q5. Given the following code that appears inside a method:

var values = new ArrayList();
//INSERT CODE HERE

What can be inserted at the given location without causing any compilation error?

Select 4 option(s):

values.forEach(var k->System.out.print(k.length()));

values.forEach( (var k)->System.out.print(k.length()));

values.forEach( k -> System.out.print(k.length()));

var k = values.get(0);
values.add(k);

for(var value : values){ }

values.add(1);

Q6. Given:

class Triangle{
public int base;
public int height;
private static double ANGLE;

public static double getAngle();

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

Identify the correct statements:

Select 1 option(s):

It will not compile because it does not implement setAngle method.

It will not compile because ANGLE cannot be private.

It will not compile because getAngle() has no body.

It will not compile because ANGLE field is not initialized.

It will not compile because of the name of the method Main instead of main.

None

Q7. What will the following code print when compiled and run?

Instant start = Instant.parse("2022-06-25T16:13:30.00z");
start.plus(10, ChronoUnit.HOURS);
System.out.println(start);

Duration timeToCook = Duration.ofHours(1);
Instant readyTime = start.plus(timeToCook);
System.out.println(readyTime);

LocalDateTime ltd = LocalDateTime.ofInstant(readyTime, ZoneId.of("GMT+2"));
System.out.println(ltd);

Select 1 option(s):

2022-06-25T16:13:30Z
2022-06-25T17:13:30Z
2022-06-25T15:13:30

T16:13:30Z
T17:13:30Z
2022-06-25T19:13:30

2022-06-25T16:13:30Z
2022-06-25T17:13:30Z
2022-06-25T19:13:30

T16:13:30Z
T17:13:30Z
2022-06-25T15:13:30

T16:13:30Z
T17:13:30Z
< exception stack trace >

< exception stack trace >

None

Q8. Which of the following code segments will correctly write the text FINAL TEXT at the end of a file file.txt ?

Select 1 option(s):

RandomAccessFile raf = new RandomAccessFile("file.txt", "a");
raf.writeChars("FINAL TEXT");

RandomAccessFile raf = new RandomAccessFile("file.txt", "rw");
raf.writeChars("FINAL TEXT");

RandomAccessFile raf = new RandomAccessFile("file.txt", "a");
raf.seek( raf.length() );
raf.writeChars("FINAL TEXT");

RandomAccessFile raf = new RandomAccessFile("file.txt", "rw");
raf.seek( raf.length() );
raf.writeChars("FINAL TEXT");

RandomAccessFile raf = new RandomAccessFile("file.txt", "rw");
raf.seek( raf.length() - 1);
raf.writeChars("FINAL TEXT");

None

Q9. What, if anything, is wrong with the following code?

void test(int x){
switch(x){
case 1:
case 2:
case 0:
default :
case 4:
case 'a'|'b': System.out.println('c');
}
}

Select 1 option(s):

Data Type of 'x' is not valid to be used as an expression for the switch clause.

The case label 0 must precede case label 1.

Each case section must end with a break keyword.

The default label must be the last label in the switch statement.

There is nothing wrong with the code.

The last case statement is invalid.

None

Q10. Consider the following code :

import java.util.*;
class Request { }
class RequestCollector{
//1 : Insert declaration here

public synchronized void addRequest(Request r){
container.add(r);
}
public synchronized Request getRequestToProcess(){
return container.poll();
}
}

What can be inserted at //1?

Select 1 option(s):

Queue< Request > container = new LinkedList< Request >();

LinkedList container = new LinkedList();

Queue container = new PriorityQueue();

Queue container = new Queue< Request >();

List al = new ArrayList();

None of these.

None

Q11. Which of the following options correctly makes use of java.util.concurrent.Callable?

Select 1 option(s):

public class MyTask implements Callable<String>{
public String call(){
try {
//do something
} catch (Exception ex) {
ex.printStackTrace();
}
return new Future<String>("Data from callable");
}
}

public class MyTask implements Callable<String>{
public String call() throws Exception {
//do something
return "Data from callable";
}
}

public class MyTask extends Callable<String>{
public String call(){
return "Data from callable";
}
}

public class MyTask implements Callable{
Future result;
public void call(){
result = new Future<String>("Data from callable");
}
}

None

Q12. Consider the following code snippet:

public class Test{
void test(){
MyClass obj = new MyClass();
obj.name = "jack";
// 1 insert code here
}
}

//In MyClass.java
public class MyClass{
int value;
String name;
}

Which of the following options are required to be inserted at // 1, that will make the object referred to by obj eligible for garbage collection?

Select 1 option(s):

obj.destroy();

Runtime.getRuntime().gc();

obj = null;

obj.finalize()

obj.name = null; as well as obj = null;

None

Q13. Given:

interface IHello
{
public int hello(int x, int y);
public long hello(long x, long y);
}

Which of the following options are valid definitions in a different file assuming that the above definition is already available?

Select 3 option(s):

interface IHello2 extends IHello{
private static void print(){ };
}

interface iHello2 implements IHello{ }

abstract class Hello implements IHello{}

abstract class Hello implements IHello{
public short hello(short a, short b){ return 0; }
}

abstract class Hello implements IHello{
public short hello(int a, int b){ return 0; }
}

Q14. 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:\\a\\b\\c");

public static String getValue(){
String x = p1.getName(1).toString();
String y = p1.subpath(1,2).toString();
return x+" : "+y;
}

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

Select 1 option(s):

\b : \b

b : b

b : b\c\

a : a\b

b : b\c

None

Q15. Given:

List ls = Arrays.asList(1, 2, 3);

Which of the following options will compute the sum of all Integers in the list correctly?

Select 2 option(s):

double sum = ls.stream().sum();

double sum = ls.stream().reduce(0, (a, b)->a+b);

double sum = ls.stream().mapToInt(x->x).sum();

double sum = 0;
ls.stream().forEach(a->{ sum=sum+a; });

double sum = 0;
ls.stream().peek(x->{sum=sum+x;}).forEach(y->{});

Q16. What will the following code print when compiled and run?

public class SortTest {
public static void main(String[] args) {
Object[] sa = { 100, 100.0, "100" };
Collections.sort(Arrays.asList(sa), null);
System.out.println(sa[0]+" "+sa[1]+" "+sa[2] );
}

}

Select 1 option(s):

100 100 100.0

100.0 100 100

100 100.0 100

It will not compile.

It will throw an exception at run time.

None

Q17. Consider the following code:

public class ArrayTest {

static int[][] table = new int[2][3];

public static void init() {
for (var x = 0; x < table.length; x++) {
for (var y = 0; y < table[x].length; y++) {

//insert code to initialize

}
}
}

public static void multiply() {
for (var x = 0; x < table.length; x++) {
for (var y = 0; y < table[x].length; y++) {

//insert code to multiply

}
}
}
}

Which of the following options can be used in the code above so that the init method initializes each table element to the sum of its row and column number and the multiply method just multiplies the element value by 2?

Select 1 option(s):

table[x, y] = x+y;
and
table[x, y] = table[x, y]*2;

table[x][y] = x+y;
and
table[x][y] = table[x][y]*2;

table[[x] [y]] = x+y;
and
table[[x] [y]] = table[[x] [y]]*2;

table(x, y) = x+y;
and
table(x, y) = table(x, y)*2;

None

Q18. Consider the following code:

public static boolean isValid(Path p){

return p.startsWith("temp") && p.endsWith("clients.dat");
}

public static void writeData() {
var p1 = Paths.get("\\temp\\records");
var p2 = p1.resolve("clients.dat");
System.out.println(p2+" "+isValid(p2));

}

What will be printed when the method writeData() is executed?

Select 1 option(s):

\temp\records\clients false

temp\records\clients.dat false

\temp\records\clients.dat false

temp\records\clients.dat true

clients.dat false

\clients.dat false

None

Q19. Consider the following code snippet:

XXXX m ;
//other code that initializes m
switch( m ){
case 32 -> System.out.println("32");
case 64 -> System.out.println("64");
case 128 -> System.out.println("128");
}

What type can 'm' be of so that the above code compiles and runs as expected ?

Select 3 option(s):

int m;

long m;

char m;

byte m;

short m;

var m;

Q20. Consider the following lines of code:

boolean greenLight = true;
boolean pedestrian = false;
boolean rightTurn = true;
boolean otherLane = false;

You can go ahead only if the following expression evaluates to 'true' :

(( (rightTurn && !pedestrian || otherLane)
|| ( ? && !pedestrian && greenLight ) ) == true )

What variables can you put in place of '?' so that you can go ahead?

Select 1 option(s):

rightTurn

otherLane

Any variable would do.

None of the variable would allow to go.

None

Q21. Identify correct statements about java module descriptor.

Select 2 option(s):

module-info.java may be placed inside any folder of the module.

module-info.java must not be empty.

If module-info.java is absent, then the module name is inferred from the directory name in which the source code resides.

module-info.java is compiled into module-info.class by the compiler.

module-info.java always belongs to the default package.

Q22. What will the following code print?

char[] a = { 'h', 'e', 'l', 'l'};
char[] b = { };

int x = Arrays.compare(a, b);
int y = Arrays.mismatch(a, b);
System.out.println(x+" "+y);

Select 1 option(s):

It will throw an IndexOutOfBoundsException at run time.

4 0

1 0

-4 -4

-4 4

None

Q23. Given the following code:

class TestClass{
public static void main(String args[]){
java.sql.Timestamp ts = new java.sql.Timestamp(1);
java.awt.Label lb = new java.awt.Label("Time is "+ts);
System.out.println(lb);
}
}

and the following commands:

javac TestClass.java
jdeps -summary TestClass.class

What will be the output?

Select 1 option(s):

TestClass.class -> java.desktop
TestClass.class -> java.sql
TestClass.class -> java.util

TestClass.class -> java.base

TestClass.class -> java.base
TestClass.class -> java.se

TestClass.class -> java.base
TestClass.class -> java.desktop
TestClass.class -> java.sql

TestClass.class -> java.base
TestClass.class -> java.sql
TestClass.class -> java.util
TestClass.class -> java.desktop

Compilation will be successful but the jdeps command will generate an error.

None

Q24. Given:

public record Journal(int id, String name){
public Journal(){
//1
this.id = 10; this.name="none"; //2
//3
}

public Journal(int id, String name){
this.id = id; this.name=name;
}
}

Identify correct statement(s).

Select 1 option(s):

This record class will compile without any error.

It will compile if the following line is inserted at //1:
this(10, "");

It will compile if the following line is inserted at //3:
this(10, "");

It will compile if the following line is inserted at //1 and the existing line at //2 is removed:
this(10, "");

It will compile if the line at //2 is removed.

None

Q25. Consider the following class...

class TestClass{
void probe(Integer x) { System.out.println("In Integer"); } //2

void probe(Object x) { System.out.println("In Object"); } //3

void probe(Long x) { System.out.println("In Long"); } //4

public static void main(String[] args){
String a = "hello";
new TestClass().probe(a);
}
}

What will be printed?

Select 1 option(s):

In Integer

In Object

In Long

It will not compile

None

Q26. What will the following code fragment print?

Path p1 = Paths.get("c:\\personal\\.\\photos\\..\\readme.txt");
Path p2 = Paths.get("c:\\personal\\index.html");
Path p3 = p1.relativize(p2);
System.out.println(p3);

Select 1 option(s):

..\..\..\..\index.html

..\..\..\index.html

..\index.html

c:\personal\index.html

None

Q27. Given the class

// Filename: Test.java
public class Test{
public static void main(String args[]){
for(int i = 0; i< args.length; i++){
System.out.print(" "+args[i]);
}
}
}
Now consider the following 3 options for running the program:
a: java Test
b: java Test param1
c: java Test param1 param2

Which of the following statements are true?

Select 2 option(s):

The program will throw java.lang.ArrayIndexOutOfBoundsException on option a.

The program will throw java.lang.NullPointerException on option a.

The program will print Test param1 on option b.

It will print param1 param2 on option c.

It will not print anything on option a.

Q28. What will the following code print when compiled and run:

public class TestClass {

public static void main(String[] args){
var k = 2;
do{
System.out.println(k);
}while(--k>0);
}
}

Select 1 option(s):

1
0

2
1

2
1
0

It will keeping printing numbers in an infinite loop.

It will not compile.

None

Q29. A developer has written the following code snippet:

Console c = System.console(); //1
String line = c.readLine("Please enter your name:"); //2
System.out.println("Hello, "+line); //3

Which of the following checked exceptions may be thrown by this code?

Select 1 option(s):

java.io.IOException

java.lang.Exception

java.io.EOFException

None

Q30. What will the following code snippet print?

int count = 0, sum = 0;
do{
if(count % 3 == 0) continue;
sum+=count;
}
while(count++ < 11);
System.out.println(sum);

Select 1 option(s):

None

Q31. Given the following code, which statements can be placed at the indicated position without causing compile and run time errors?

public class Test{
int i1;
static int i2;
public void method1(){
int i;
// ... insert statements here
}
}

Select 3 option(s):

i = this.i1;

i = this.i2;

this = new Test( );

this.i = 4;

this.i1 = i2;

Q32. Given that Daylight Savings Time ends on Nov 1 at 2 AM in US/Eastern time zone, what will the following code print -

LocalDateTime ld = LocalDateTime.of(2022, Month.OCTOBER, 31, 10, 0);

ZonedDateTime date = ZonedDateTime.of(ld, ZoneId.of("US/Eastern"));
date = date.plus(Duration.ofDays(1));
System.out.println(date);

date = ZonedDateTime.of(ld, ZoneId.of("US/Eastern"));
date = date.plus(Period.ofDays(1));
System.out.println(date);

Select 1 option(s):

2022-11-01T09:00-05:00[US/Eastern]
2022-11-01T09:00-05:00[US/Eastern]

2022-11-01T09:00-05:00[US/Eastern]
2022-11-01T10:00-05:00[US/Eastern]

2022-11-01T10:00-05:00[US/Eastern]
2022-11-01T09:00-05:00[US/Eastern]

2022-11-01T10:00-05:00[US/Eastern]
2022-11-01T10:00-05:00[US/Eastern]

None

Q33. What will the following class print ?

class InitTest{
public static void main(String[] args){
int a = 10;
int b = 20;
a += (a = 4);
b = b + (b = 5);
System.out.println(a+ ", "+b);
}
}

Select 1 option(s):

8, 25

4, 5

14, 5

4, 25

14, 25

None

Q34. Given:

public class Item{
private String name;
private String category;
private double price;

public Item(String name, String category, double price){
this.name = name;
this.category = category;
this.price = price;
}

//accessors not shown
}

What will the following code print?

List items = Arrays.asList(
new Item("Pen", "Stationery", 3.0),
new Item("Pencil", "Stationery", 2.0),
new Item("Eraser", "Stationery", 1.0),
new Item("Milk", "Food", 2.0),
new Item("Eggs", "Food", 3.0)
);

ToDoubleFunction priceF = Item::getPrice; //1

items.stream()
.collect(Collectors.groupingBy(Item::getCategory)) //2
.forEach((a, b)->{
double av = b.stream().collect(Collectors.averagingDouble(priceF)); //3
System.out.println(a+" : "+av);
});

Select 1 option(s):

Stationery : 2.0
Food : 2.5

[Pen : 3.0, Pencil : 2.0, Eraser : 1.0] : 2.0
[Milk : 2.0, Eggs : 3.0] : 2.5

Pen : 3.0, Pencil : 2.0, Eraser : 1.0 : 2.0
Milk : 2.0, Eggs : 3.0 : 2.5

Stationery : [Pen : 3.0, Pencil : 2.0, Eraser : 1.0] : 2.0
Food : [Milk : 2.0, Eggs : 3.0] : 2.5

Compilation error due to code at //1

Compilation error due to code at //2

Compilation error due to code at //3

None

Q35. What will the following program print when run?

class Super{
public String toString(){
return "4";
}
}
public class SubClass extends Super{
public String toString(){
return super.toString()+"3";
}
public static void main(String[] args){
System.out.println( new SubClass() );
}
}

Select 1 option(s):

It will not compile.

It will throw an exception at runtime.

None of the above.

None

Q36. How many times will the line marked //1 be called in the following code?

var x = 10;
do{
x--;
System.out.println(x); // 1
}while(x<10);

Select 1 option(s):

None of these.

None

Q37. What will the following code print when run?

public class TestClass {
public static void main(String[] args) throws Exception { //1

var flag = true; //2
switch (flag){ //3
case true -> System.out.println("true");
default -> System.out.println("false");
}

}
}

Select 1 option(s):

false

true
false

true

Compilation error at line marked //1.

Compilation error at line marked //2.

Compilation error at line marked //3.

Exception at run time.

None

Q38. Given the following code fragment:

var raf = new RandomAccessFile("c:\\temp\\test.txt", "rwd");

//INSERT CODE HERE

raf.close();

var dis = new DataInputStream(new FileInputStream("c:\\temp\\test.txt"));
String value = dis.readUTF();
System.out.print(value);
dis.close();

Which of the following options can be inserted in the above code so that it will print hello world?

Select 1 option(s):

raf.writeString("hello world");

raf.writeChars("hello world");

raf.writeUTF("hello world");

raf.writeData("hello world");

None

Q39. Consider the following piece of code, which is run in an environment where the default locale is English - US:

Locale.setDefault(new Locale("fr", "CA")); //Set default to French Canada
Locale l = new Locale("jp", "JP");
ResourceBundle rb = ResourceBundle.getBundle("appmessages", l);
String msg = rb.getString("greetings");
System.out.println(msg);

You have created two resource bundles for appmessages, with the following contents:

#In English US resource bundle file
greetings=Hello

#In French CA resource bundle file
greetings=bonjour

What will be the output?

Select 1 option(s):

Hello

bonjour

An exception at run time.

No message will be printed.

None

Q40. What changes can be made to the following code so that it will print :

Old Rating A
New Rating R

List ratings = Arrays.asList('U', 'R', 'A');
ratings.stream()
.filter(x->x=='A') //1
.peek(x->System.out.println("Old Rating "+x)) //2
.map(x->x=='A'?'R':x) //3
.peek(x->System.out.println("New Rating "+x)); //4

Select 1 option(s):

Replace //2 with .forEach(System.out::println)

Replace //3 with
.map(x->System.out.println('R'));
and remove //4.

Replace //4 with
.forEach(x->System.out.println("New Rating "+x))

No change is necessary.

None

Q41. You are creating an inventory module. This module contains a com.inventory.Queries class that uses a com.acme.DB class. This com.acme.DB class is contained in acme.db module. Which of the following files correctly defines the inventory module?

Select 1 option(s):

module inventory{
requires com.acme.db.*;
}

module inventory{
requires acme.db;
}

module inventory{
requires acme.db/com.acme.DB;
}

module inventory{
uses com.acme.DB;
}

module inventory{
requires com.acme.DB;
}

module inventory{
requires com.acme.DB transitively;
}

None

Q42. What will be the result of trying to compile and execute the following program?

public class TestClass{
public static void main(String args[] ){
var i = 0 ;
int[] iA = {10, 20} ;
iA[i] = i = 30 ;
System.out.println(""+ iA[ 0 ] + " " + iA[ 1 ] + " "+i) ;
}
}

Select 1 option(s):

It will throw ArrayIndexOutOfBoundsException at Runtime.

Compile time Error.

It will print 10 20 30

It will print 30 20 30

It will print 0 20 30

None

Q43. Given:

LocalDate d1 = LocalDate.parse("2022-02-05", DateTimeFormatter.ISO_DATE);
LocalDate d2 = LocalDate.of(2022, 2, 5);
LocalDate d3 = LocalDate.now();
System.out.println(d1);
System.out.println(d2);
System.out.println(d3);

Assuming that the current date on the system is 5th Feb, 2022, which of the following will be a part of the output?

Select 1 option(s):

5th Feb, 2022

2022-02-05T00:00:00

02/05/2022

05/02/2022

java.time.format.DateTimeParseException

None of the above.

None

Q44. Identify correct statements about the following code:

class Writer{
private static final int LOOPSIZE = 5;
public synchronized void write(Data... da){
for(int i=0; i<LOOPSIZE; i++){
while(!da[0].own(this));
while(!da[1].own(this));
da[0].write(i); da[1].write(i);
da[1].release();
da[0].release();
}
}
}
class Data{
Writer writer; int id;
public Data(int id){ this.id = id; }
public synchronized boolean own(Writer w){
if(writer == null){
writer = w; return true;
}
else return false;
}
public synchronized void release(){ writer = null; }
public void write(int i){
System.out.println("data written W"+i+" D"+id);
}
}
public class TestClass {
public static void main(String[] args) {
var w1 = new Writer();
var w2 = new Writer();
var d1 = new Data(1);
var d2 = new Data(2);
new Thread(()->{w1.write(d1, d2);}).start();
new Thread(()->{w2.write(d1, d2);}).start();
}
}

Select 1 option(s):

It is subject to a deadlock.

It is subject to a livelock.

It is subject to starvation.

This code will compile and run fine without causing deadlock, livelock, or starvation.

It will throw an IllegalMonitorStateException at run time.

None

Q45. What will the following program print?

class Test{
public static void main(String args[]){
int var = 20, i=0;
do{
while(true){
if( i++ > var) break;
}
}while(i<var--);
System.out.println(var);
}
}

Select 1 option(s):

It will enter an infinite loop.

It will not compile due to the variable named var.

None

Q46. Which of the following interface definitions can be implemented using Lambda expressions?

@FunctionalInterface
interface A{
static void m1(){};
}

interface AA extends A{
void m2();
private void mp(){ }
}

interface AAA extends AA{
void m3();
}

interface B {
default void m1(){ }
}
interface BB extends B {
static void m2(){ };
}
interface C extends BB{
void m3();
}

Select 2 option(s):

AAA

Q47. Which of the following are valid code fragments:

Select 2 option(s):

new Object[]{ "aaa", new Object(), new ArrayList(), 10};

new Object[]{ "aaa", new Object(), new ArrayList(), {} };

new Object[]{ "aaa", new Object(), new ArrayList(), new String[]{""} };

new Object[1]{ new Object() };

Q48. What would be the result of trying to compile and run the following program?

public class Test{
int[] ia = new int[1];
Object oA[] = new Object[1];
boolean bool;
public static void main(String args[]){
var test = new Test();
System.out.println(test.ia[0] + " " + test.oA[0]+" "+test.bool);
}
}

Select 1 option(s):

The program will fail to compile, because of uninitialized variable 'bool'.

The program will throw a java.lang.NullPointerException when run.

The program will print "0 null false".

The program will print "0 null true".

The program will print null and false but will print junk value for ia[0].

None

Q49. You have created a module named mycompany.smartschool packaged in smartschool.jar. This module uses a third party non-modular java library packaged as utils.jar.

How will you execute your module's main class named mycompany.smartschool.Main?

(Assume that the jar files are located in the current directory.)

Select 1 option(s):

java --module-path smartschool.jar;utils.jar
--module mycompany.smartschool/mycompany.smartschool.Main

java -classpath utils.jar --module-path smartschool.jar
--module mycompany.smartschool/mycompany.smartschool.Main

java -cp utils.jar;smartschool.jar --module mycompany.smartschool/mycompany.smartschool.Main

java -classpath utils.jar --module-jar smartschool.jar
-main-class mycompany.smartschool/mycompany.smartschool.Main

None

Q50. Given:

String[] students = { "Amit", "Babu", "Chetan", "Dhiraj" };
Which of the following code snippets will print
Amit
Kamal
Chetan
Dhiraj

Select 2 option(s):

List< String > list = new ArrayList<>(List.of(students));
list.replaceAll(s->s.equals("Babu")?"Kamal":s);
list.stream().parallel().forEach(System.out::println);

List< String > list = List.of(students);
students[list.indexOf("Babu")] = "Kamal";
list.forEach(System.out::println);

List< String > list = Arrays.asList(students);
students[list.indexOf("Babu")] = "Kamal";
list.forEach(System.out::println);

List< String > list = Arrays.asList(students);
list.stream()
.map(s->s.equals("Babu")?"Kamal":s)
.parallel()
.forEachOrdered(s->System.out.println(s));

Set< String > set = new HashSet<>(List.of(students));
set.remove("Babu");
set.add("Kamal");
set.forEach(System.out::println);

Time's up