Are getters and setters inbuilt functions in java or are they user defined??

Answer 1

For your own classes you'll have to implement them. Many IDEs provide the functionality to generate them automatically.

Answer 2

user-defined.

However in API, you can see methods like String.getBytes() .
And in Java 14 there is new datatype: record with build-in getters/setters, but it is just 'preview feature' for future java.
https://www.baeldung.com/java-record-keyword