Question: How do I move a certificate from IIS / PFX (.p12 file) to a JKS (Java KeyStore)?
Answer: Run the following command:

keytool -importkeystore -srckeystore  pkcs12FileName.p12  -srcstoretype pkcs12 -destkeystore  jksFileName.jks -deststoretype jks 

Related Article:

* Converting JKS to PFX Format.