Final answer:
Fixing the 'javax.net.ssl.SSLHandshakeException sun.security.validator.ValidatorException' in Java usually involves checking the server's certificate, ensuring Java's keystore trusts it, including all necessary intermediate certificates, disabling hostname verification only as a temporary measure, or updating Java to the latest version.
Step-by-step explanation:
The javax.net.ssl.SSLHandshakeException sun.security.validator.ValidatorException is a common error in Java that occurs during SSL handshake processing, meaning the Java application is unable to trust the certificate provided by the server. This can happen for various reasons, including an outdated or untrusted certificate, wrong hostname verification, or missing intermediate/chain certificates.
To fix this issue in Java, you might need to take one or several of the following steps:
- Ensure the server's certificate is not expired and is trusted by Java's keystore.
- If a custom truststore is used, make sure it contains all necessary certificates, including intermediate certificates.
- Disable hostname verification if it's not required and causing the issue, preferably as a temporary workaround.
- Update to the latest version of Java which might contain more up-to-date CA certificates.
After you've implemented a suitable solution, you should be able to establish a successful SSL connection without encountering the SSLHandshakeException.