Using self-signed certificates with keytool for development purposes?

First question: if you'll be connecting by IP, then yes.

First question: if you'll be connecting by IP, then yes. Second question: No, you don't install your self-signed certificate as CA, you just add exception when your browser warns you that it's self-signed. You can set up CA — you generate root certificate first, install it in the client, and then generate CSR and then server certificate from it (see e.g. This), but for development purposes this is a complete waste of time.

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