Null pointer exception is thrown when an application tries to use an object or variable reference that has the null value in it. Null pointer Exception - null pointer is a runtime exception. Null pointer - In computer programming, a null pointer is a pointer that does not point to any object or function. It provides direct access to that variable’s value and addresses.

The pointer is a special variable that contains the address of the specified variable. Pointer - Every variable has a memory and every memory has its own address and location. So when a variable points to null it points to nothing. If it is assigned to a variable that means that variable has no value at all. Let’s see how beautifully kotlin handles nulls. That’s why when JetBrains team designs the kotlin they put a fair focus on handling null and they came up with a magical solution which is really very effective to provide safety against nulls. Null pointer was one of the most painful exceptions for android and java developers. More than 70% of apps crash in its lifetime due to null pointer exception. If you ask any android or java developer about the scariest exception, he/she will say only one name and that is NPE or Null Pointer Exception.

Kotlin null check