Define Exception. Why should we handled an Exception? Write a Java program to create a class Mobile (type, Phone no). Customize the exception such that if the user give phone no having less than or…

Define Exception. Why should we handled an Exception? Write a Java program to create a class Mobile (type, Phone_no). Customize the exception such that if the user give phone_no having less than or greater than 10 digit, then the program has to throw an exception with the message "Invalid Phone number".