Assertion (A) Class initialisation is the explicit initialisation of class fields to values.
Reason (R) Each class field explicitly initialises to a value via a class field initialiser.

1. Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).
2. Both Assertion (A) and Reason (R) are true and Reason (R) is not a correct explanation of Assertion (A).
3. Assertion (A) is true and Reason (R) is false.
4. Assertion (A) is false and Reason (R) is true.

Read the following text and choose the correct answer:

Java constructor overloading is a technique in which a class can have any number of constructors that differ in parameter list. The compiler differentiates these constructors by taking into account the number of parameters in the list and their type.

Why do we use constructor overloading?

1. To use different types of constructors.
2. Because it's a feature provided.
3. To initialise the object in different ways.
4. To differentiate one constructor from another.

String is …………… in Java.

1. interface
2. mutable
3. method
4. immutable

What will be the output of the following statements?

int a = 3;
System.out.println(" " + (1 + a)); 
System.out.println(" " + 1 + a);