JAVA-EC MADURAI NOV BATCH DATED 22 FEB 2025 - MSME

ALL THE BEST!!!

JAVA EC MADURAI-NOV BATCH -202ND FEB 2025

1 / 50

Array in Java is ______________

Collection of similar elements

Collection of elements of different types

The data type of consisting of characters

None of these

2 / 50

Can we keep a different name for the java class name and java file
name?

Yes

3 / 50

Can the Java program accept input from the command line?

Yes, using command-line arguments

Yes, by access command prompt

None of these

4 / 50

Which of the following ways is the correct way to create an object
in Java?

Using the new keyword

Using newInstance() method

clone() method

All of these

5 / 50

What will happen if an exception is thrown and not caught in a try-catch block?

The program will ignore the exception and continue executing

The program will terminate immediately

The exception will be caught by the JVM

The exception will be thrown to the caller of the method

6 / 50

Which method is used to get the length of a String in Java?

length

size

getLength

length()

7 / 50

Which method is used to round off a floating-point number to the nearest integer in Java?

Math.round()

Math.ceil()

Math.floor()

Math.truncate()

8 / 50

What are the types of memory allocated in memory in java?

Heap memory

Stack memory

Both A and B

None of these

9 / 50

Which of the following is a valid conditional statement in Java?

if (x = 10)

if (x == 10)

if (x != 10)

Both b and c

10 / 50

What are packages in Java?

Methods of a friend class

Methods of the main class

Way to encapsulate a group of classes, sub-packages, and interface

All of these

11 / 50

JRE stands for _______________

Java run ecosystem

JDK runtime Environment

Java Runtime Environment

None of these

12 / 50

Static variables in java are declared as __________________

final variables

new variables

Constants

All of these

13 / 50

JDK stands for _________________

Java development kit

Java deployment kit

JavaScript deployment kit

None of these

14 / 50

Which of the following statements is true?

An abstract class can implement an interface

An interface can extend a class

An abstract class cannot extend another abstract class

An interface can extend multiple classes

15 / 50

Which operator is used to check multiple conditions in a single if statement?

Both a and b

16 / 50

Which of the following statements is used to exit a loop prematurely?

continue

break

return

exit

17 / 50

What makes the Java platform independent?

Advanced programming language

It uses bytecode for execution

Class compilation

All of these

18 / 50

BigInteger Class is used to ____________

Store very long range of number

Store integer values

A class that stores large range of integer

All of these

19 / 50

Which of these is the correct method to create an array in java?

int[] arr = {1, 3, 5};

int[] arr;

arr = new int[] {3, 1, 8};

int arr[] = {1, 4, 6};

All of these

20 / 50

Which keyword is used to inherit classes in Java?

extends

inheritance

isChild

None of these

21 / 50

Which keyword in Java is used for exception handling?

exep

excepHand

throw

All of these

22 / 50

Which of the following inheritance of class is invalid in Java?

Single

Multiple

Multi-level

Hierarchical

23 / 50

Which of the following is a correct way to declare an abstract method in Java?

abstract void methodName();

abstract method methodName();

void methodName() abstract;

methodName() abstract;

24 / 50

Can we write a program without a main method in Java?

Yes

25 / 50

Enumeration in Java is ______________

Data type which contains fixed set of constants

Method

Class

None of these

26 / 50

What is garbage collection in Java?

Method to manage memory in java

Create new garbage values

Delete all values

All of these

27 / 50

Can the main() method be overloaded in Java?

Yes

28 / 50

Which of the following is true about String objects in Java?

Strings are mutable

Strings are immutable

Strings are reference types and mutable

Strings are value types and immutable

29 / 50

Which keyword is used to implement an interface in Java?

implements

extends

inherits

overrides

30 / 50

Can we pass objects to method arguments in Java?

Yes

31 / 50

What will be the output of the following Java code?

public class Main {
public static void main(String arg[]) {
int i;
for (i = 1; i <= 12; i +=2)

{ if (i == 8) {
System.out.println(i);
break;
}
}
}
}

No output

1357911

32 / 50

What does the concat() method do in Java?

Combines two strings

Compares two strings

Copies a string

Converts a string to uppercase

33 / 50

Which of the following is the correct syntax for an if-else statement in Java?

if (condition) { ... } else { ... }

if (condition) { ... } else if (condition) { ... }

if (condition) else { ... }

if (condition) { ... } else

34 / 50

Which statement is used to specify a block of code that will be executed regardless of the conditions in a try-catch block?

catch

finally

else

return

35 / 50

'this' keyword in java is ______________

Used to hold the reference of the current object

Holds object value

Used to create a new instance

All of these

36 / 50

Which of the following methods is used to calculate the power of a number in Java?

Math.power()

Math.exp()

Math.pow()

Math.raise()

37 / 50

Which statement is correct for private member in Java?

Access outside the class is allowed

Any class can access

Declared using private keyword

All of these

38 / 50

The 'implements' keyword is used to ________________

Implement the function of a class

Inherit an interface in Java

Inherit a class in java

All of these

39 / 50

Object in java are __________

Classes

Iterators

References

None of these

40 / 50

Which loop in Java checks the condition after executing the loop's body?

for loop

while loop

do-while loop

enhanced for loop

41 / 50

Which method is used to return the maximum of two numbers in Java?

Math.maximum()

Math.max()

Math.greatest()

Math.higher()

42 / 50

What is the entry point of a program in Java?

main() method

The first line of code

Last line of code

main class

43 / 50

Multiline comment is created using ________________

/* */

All of these

44 / 50

What is polymorphism in Java?

Performing a single task in multiple ways

Performing multiple tasks using multiple methods

Creating a new class for each task

All of these

45 / 50

Which method is used to find the absolute value of a number in Java?

Math.absolute()

Math.abs()

Math.absValue()

Math.absoluteValue()

46 / 50

Which of the following is true about interfaces in Java?

Interfaces can contain method implementations

Interfaces can have constructors

Interfaces can contain only abstract methods and final variables

Interfaces can contain instance variables

47 / 50

Which method is used to compare two strings in Java?

equals()

compareTo()

isEqual()

Both a and b

48 / 50

The break statement in Java is used to ______________

Terminates from the loop immediately

Terminates from the program immediately

Skips the current iteration

All of these

49 / 50

Empty interface in Java is called?

Marker interface

Abstract class

Derived class

None of these

50 / 50

An abstract class in Java:

Cannot have any concrete methods

Can be instantiated directly

Can have both abstract and concrete methods

Cannot have constructors

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