What is the difference between Servlet response methods addHeader and setHeader?

Question

Can I use setHeader to set an new header? Or Do I need to addHeader first, then use setHeader method? Answer The documentation says that you can add multiple values to a particular header using the addHeader method, whereas an initial value would be overwritten if you use the setHeader method. In both cases a non-existent header would be created.

Accepted Answer

The documentation says that you can add multiple values to a particular header using the addHeader method, whereas an initial value would be overwritten if you use the setHeader method.In both cases a non-existent header would be created.

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Answer