Best way to check for null values in Java?

Question

Before calling a function of an object, I need to check if the object is null, to avoid throwing a NullPointerException.

What is the best way to go abou

Answer 1

We can use Object.requireNonNull static method of Object class. Implementation is below

public void someMethod(SomeClass obj) {
    Objects.requireNonNull(obj, "Validation error, obj cannot be null");
}