Question

What process does the following program illustrate in java?

package test; public class MyClass { public static void main(String[] args) { int i = 10; Integer iObject = i; System.out.println(iObject); } }

unboxing, autoboxing, encapsulation, abstraction

Answer 1

The below program illustrate autoboxing in java.

Autoboxing is converting any primitive data type to its corresponding wrapper class object.

example -

int i = 5;

Integer iObject = i;

Java compiler performs autoboxing automatically in the example when int data type value was assigned to the variable of the corresponding(Integer) wrapper class.

What other terms mean -

Unboxing - it is opposite of autoboxing. here a Wrapper class object will be assigned to a corresponding primitive data type.

Encapsulation - It is the binding of data (variables ) and methods in one class. like class A { int a; int b; sum(){return a+b;} }

Abstraction - It means hiding the implementation of a method from the user.