Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I am confused over this because having a final field b of type B inside an Object A just ensures that the field b can’t be instantiated again but the state of A can be still be changed by manipulating b internally or externally, so how does final serve the purpose immutablity here?
finalhelps to implement an immutable object. The immutable object must ensure that any objects it owns are themselves immutable or at least not publicly mutable.There is no royal path to immutability in Java (or otherwise, I may add).