How do I handle null values in Java?
An example of an AI chatbot conversation about handling null values in Java.
How do I handle null values in Java?
In Java, you can handle null values using checks like if statements or the Optional class to avoid NullPointerExceptions.
What is the Optional class?
The Optional class is a container that may or may not contain a non-null value, helping to avoid null checks.
Can you give me an example of using Optional?
Sure! You can create an Optional like this: Optional<String> name = Optional.ofNullable(getName()); Then use name.ifPresent(n -> System.out.println(n)); to print the name if it's not null.
What happens if I try to access a value from an empty Optional?
If you try to access a value from an empty Optional using get(), it will throw a NoSuchElementException. It's safer to use methods like orElse().
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