Tomcat is a popular Java application server. You can install a certificate in the JKS or PFX format on a Tomcat server to enable HTTPS. You can select a certificate format based on specific business requirements, existing resources, and compatibility with peripheral systems.
JKS is the standard keystore type for Java and is widely used in Java-based applications and services. If your business runs in a Java environment and the tools and scripts that you use are compatible with JKS, you can use a JKS certificate, which is more convenient.
PFX is a cross-platform universal standard that is supported by Java and other environments, such as Windows systems, IIS servers, and SSL libraries for various programming languages. If you want to share certificates across multiple technology stacks or your business is tightly integrated with non-Java systems, you can use a PFX certificate, which is more interoperable.