In [[IBM WebSphere Application Server]] and [[Oracle WebLogic Server]], a file with extension ''jks'' serves as a keystore.
The [[Java Development Kit]] maintains a [[certificate authority|CA]] keystore file named ''cacerts'' in folder ''jre/lib/security''. JDKs provide a tool named ''keytool''<ref>[httphttps://docs.oracle.com/en/java/javase/617/docs/technotesspecs/tools/solarisman/keytool.html The ''keytool'' Command - Keya key and Certificatecertificate management Managementutility Tool]</ref> to manipulate the keystore. ''keytool'' has no functionality to extract the private key out of the keystore, but this is possible with third-party tools like jksExportKey, CERTivity,<ref>[http://www.edulib.com/products/keystores-manager/ CERTivity - A multi-platform visual tool for managing keystores]</ref> Portecle<ref>[http://portecle.sourceforge.net Portecle - Portecle is an open-source GUI application for creating, managing and examining keystores.]</ref> and KeyStore Explorer.<ref>[http://keystore-explorer.org KeyStore Explorer - An open source GUI replacement for the Java command-line utilities keytool, jarsigner and jadtool.]</ref>
