What is null safety in Java?

What is null safety in Java?

Null safety in Java refers to the practices and features that help prevent null pointer exceptions, which are common runtime errors.

How does Java handle null values?

Java uses the concept of null references to indicate that a variable does not point to any object. However, this can lead to exceptions if not handled properly.

Are there any features in Java to improve null safety?

Yes, Java introduced Optional class in Java 8, which helps to avoid null references by providing a container that may or may not contain a value.

Can you give an example of using Optional?

Sure! You can use Optional like this: Optional<String> name = Optional.ofNullable(getName()); This way, you can check if a value is present before using it.