JNLP files, or Java Network Launch Protocol files, are commonly used to launch Java applications over a network or on the web. This format simplifies the distribution and operation of Java applications, eliminating the need for users to manually download and install applications on their computers. https://www.filemagic.com/en/web-files/jnlp-file-extension/jnlp-files-what-to-do-if-you-don-t-have-java-web-start-software/