Java Quiz for Beginners - Get Learn Tech

Welcome to your Java Quiz for Beginners

Name

What is the purpose of the "continue" statement in Java?

It skips the current iteration of a loop and continues with the next iteration.

It throws an exception to be caught by a try-catch block.

It terminates the entire program.

It exits the loop or switch statement it is used in.

What does the "implements" keyword indicate in Java?

It specifies that a class is a subclass of another class.

It indicates that a method returns a value.

It is used to implement an abstract method.

It is used to implement an interface.

Which of the following is true about Java interfaces?

Interfaces can have constructors.

Interface data members will be private

Interfaces can have instance variables.

Classes can implement multiple interfaces.

What is the output of the following code snippet?

int[] arr = {1, 2, 3, 4, 5};
for (int i : arr) {
if (i == 3) {
continue;
}
System.out.print(i + " ");
}

1 2 3

1 2 3 4 5

1 2 4

1 2 4 5

Which of the following is NOT a Java keyword?

main

static

final

private

What is the result of the following code snippet?

String str = "Java";
System.out.println(str.substring(1, 3));

Error

ava

Jav

What does the "extends" keyword indicate in Java?

It is used to extend the length of an array.

It is used to extend the capabilities of a method.

It indicates that a variable has a fixed length.

It specifies that a class is a subclass of another class.

What is the output of the following code snippet?

String str = "Java";
System.out.println(str.indexOf('a'));

ArrayIndexOutOfBoundException

What does the "public" access modifier indicate in Java?

It indicates that a variable or method can be accessed from any other class.

It makes a variable or method belong to the class, not the object.

It specifies that a variable or method can only be accessed within its own class

It signifies that a variable or method cannot be changed after it is initialized

Which of the following is NOT a valid Java identifier?

1Var

_myVar

myVar

$myVar

What is the output of the following code snippet?

int x = 5;
int y = 3;
System.out.println(x % y);

Error

Evaluate the following Java expression

int x=3, y=5, z=10;
System.out.println(++z + y - y + z + x++)

What is the output of the following code snippet?

int x = 10;
int y = 5;
System.out.println(x 5);

Error

false

true

Which keyword is used to create an instance of a class in Java?

createNew

create

new

instance

What does the "super" keyword do in Java?

It invokes the constructor of the parent class.

It invokes the constructor of the current class.

It refers to the subclass of the current class.

It refers to the superclass of the current class.

Which of the following is NOT a primitive data type in Java?

String

float

boolean

int

What does the "break" statement do in Java?

Skips the current iteration of a loop and continues with the next iteration.

Throws an exception to be caught by a try-catch block.

Exits the loop or switch statement it is used in.

Terminates the entire program.

What is the output of the following code snippet?

System.out.println(10 != 5);

Error

false

true

What does the "void" keyword indicate in Java?

It specifies that a variable or method can only be accessed within its own class.

It indicates that a method does not return any value.

It indicates that a variable does not have a specific value.

It signifies that a variable or method cannot be changed after it is initialized.

What is the purpose of the "finally" block in a try-catch-finally statement in Java?

It is executed regardless of whether an exception occurs.

It is executed before the try block.

It is executed only if an exception occurs.

It is executed only if catch block executes.

What is the output of the following code snippet?

int[] numbers = {1, 2, 3, 4, 5};
System.out.println(numbers[3]);

What is the output of the following code snippet?

int x = 5;
int y = 2;
System.out.println(x / y);

1.0

2.5

2.0

What is the output of the following code snippet?

String str = "Hello";
System.out.println(str.length());

What is the output of the following code snippet?

String name = "Java"; System.out.println("Hello, " + name + "!");

Hello

Hello, name!

Hello, Java!

Hello, "Java"!

What does the "this" keyword refer to in Java?

It refers to the current class being used.

It refers to the superclass of the current class.

It refers to the current method being executed.

It refers to the current object instance.

What is the purpose of the "import" keyword in Java?

It specifies the package where the current class is located.

It is used to include external libraries in the project.

It is used to import classes from the java.util package.

It indicates the starting point of the program.

What does the "protected" keyword indicate in Java?

It makes a variable or method belong to the class, not the object.

It specifies that a variable or method can only be accessed within its own class

It indicates that a variable or method can only be accessed within its own package or by subclasses.

It signifies that a variable or method cannot be changed after it is initialized.

Which operator is used for comparing two numbers for equality in Java?

===

What is the output of the following code snippet?

int x = 10;
System.out.println(x++);

What is the output of the following code snippet?

String str = "Java";
System.out.println(str.charAt(2));

What is the result of the following code snippet?

int x = 10;
x += 5;
System.out.println(x);

Error

Which of the following is a valid long literal?

123.456

123L

123

123.0

Which of the following is true about Java arrays?

Arrays automatically resize when elements are added or removed.

The elements of an array must be of the same data type.

The length of an array can be changed after it is initialized.

Arrays can contain elements of different data types.

What does the expression float a = 35 / 0 return?

ArithmeticException: / by zero

35.0

Time's up