How do I get rid of NullPointerException?

NullPointerException is thrown when a reference variable is accessed (or de-referenced) and is not pointing to any object. This error can be resolved by using a try-catch block or an if-else condition to check if a reference variable is null before dereferencing it.

Is NullPointerException bad?

It is generally a bad practice to catch NullPointerException. Programmers typically catch NullPointerException under three circumstances: The program contains a null pointer dereference. Catching the resulting exception was easier than fixing the underlying problem.

What is NullPointerException in Android?

Thrown when an application attempts to use null in a case where an object is required. Applications should throw instances of this class to indicate other illegal uses of the null object. NullPointerException objects may be constructed by the virtual machine as if stack trace was not writable.

Why does NullPointerException occur?

What Causes NullPointerException. The NullPointerException occurs due to a situation in application code where an uninitialized object is attempted to be accessed or modified. Essentially, this means the object reference does not point anywhere and has a null value.

What is NullReferenceException in C#?

NullReferenceException occurs when you try to to access member fields, or function types that points to null.

What does NullPointerException mean in processing?

NullPointerException is a runtime exception in Java that occurs when a variable is accessed which is not pointing to any object and refers to nothing or null.

How do you handle unchecked exceptions?

For unchecked exceptions, the compiler won’t do such a check. You can handle checked/unchecked exceptions the same way (with try/catch/throws), the difference just lies in the checks the compiler performs. This post has a decent example. Yes you can handle the unchecked exception but not compulsory.

https://www.youtube.com/watch?v=–bK-_d70eM