How can you handle null values in Dart using null-aware operators?

In Dart, null-aware operators, such as the '??' operator, are used to handle null values efficiently. The '??' operator returns the value on its left if it is non-null; otherwise, it returns the value on its right. This concise syntax is particularly useful for avoiding null reference errors and providing default values when dealing with nullable variables, contributing to more robust and concise code.