convert_pem_to_jks

openssl pkcs12 -export -in nmp_client.crt -inkey nmp_client.key -out nmp_client.pfx
nmp_client.crt nmp_client.key

keytool -genkey -keyalg RSA -alias endeca -keystore nmp_client_truststore.ks

keytool -delete -alias endeca -keystore nmp_client_truststore.ks

../ca/nmp_ca.crt

keytool -import -v -trustcacerts -alias endeca-ca -file ../ca/nmp_ca.crt -keystore nmp_client_truststore.ks

keytool -genkey -keyalg RSA -alias endeca -keystore nmp_client_keystore.ks
keytool -delete -alias endeca -keystore nmp_client_keystore.ks

keytool -v -importkeystore -srckeystore nmp_client.pfx -srcstoretype PKCS12 -destkeystore nmp_client_keystore.ks -deststoretype JKS

Reference