What is Boxing, Unboxing and Autoboxing in Java?

Question

What is Boxing, Unboxing and Autoboxing in Java?

Answer 1

Boxing

Converting primitive datatype to object is called boxing.
Example :
Integer obj = new Integer ("2526");

Autoboxing

Converting a primitive value into an object of the corresponding wrapper class is called autoboxing.
Example :
Character gfg = 'a';

Unboxing

Converting an object into corresponding primitive datatype is known as unboxing.
Example :
public class Sample {
public static void main (String args[]){
Integer obj = new Integer("2526");
int i = obj.intValue();
System.out.println(i);
}
}

Answer 2

Integer a = new Integer(7);
int b = 8;
System.out.print(a < b);
Integer is an Object, int is a primitive type. And when we compare them JVM knows when to use Boxing.

Answer 3

Arjun, since JDK 5 you don't need to use .intValue():
Integer obj = new Integer("2526");
int i = obj;
Or just:
int i = new Integer(2526);