Success response when invoking https url using Postman and failure when invoking from standalone

[kranthi chamarthi]

Hi..I have a web application containing a servlet and some buisiness logic code. It can be accessed via https url(from a particular port). When i try to invoke the https url from Postman it is able to access the webapplication and give response. But when i try to invoke this https url via a stand alone program using java.net.HttpURLConnection i am getting below exception! As per my understanding behavior should be same like either https url can be accessible by both Postman and standalone program or both should be throwing SSLHandshakeException. Can anyone guide me why this might be happening. Do i need to change something in my program.

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)

[kranthi chamarthi]

Forget to mention one point..In both Postman as well as standalone program i am not using any username and password as well as not defining any Authentication Type.

[Vijitha Kumara]

Did you check the certificates (you seems to have control in the server too?) in the server? May be you need to check with installing them in your client JVM.