How does my java program know where my keystore containing the certificate is? Or alternatively how do I tell my java program where to look for the keystore?

After specifying the keystore in some way, how to specify the certificate to use for authenticating the server to client?

How does my Java program know where my keystore containing the certificate is? 

Or alternatively: How do I tell my Java program where to look for the keystore?

After specifying the keystore in some way, how to specify the certificate to use for authenticating the server to client?

How does my java program know where my keystore containing the certificate is  ? Or alternatively how do i tell my java program where to look for the keystore. And after specifying the keystore in some way, how to specify the certificate to use for authenticating the server to client  ?

How does my java program know where my keystore containing the certificate is? Or alternatively how do I tell my java program where to look for the keystore?

After specifying the keystore in some way, how to specify the certificate to use for authenticating the server to client?

How does my java program know where my keystore containing the certificate is ? Or alternatively how do i tell my java program where to look for the keystore

How does my java program know where my keystore containing the certificate is ? Or alternatively how do i tell my java program where to look for the keystore. And after specifying the keystore in some way, how to specify the certificate to use for authenticating the server to client ?