Anyone knows the purpose of the manifest.mf file?

Inside meta-inf folder, there is a manifest.mf. Anyone knows what's th开发者_StackOverflowe purpose of this file?

The MANIFEST.MF file is explained in detail here.

Here is the summary:

JAR files can support a wide range of functionality, including electronic signing, version control, package sealing, extensions, and others. What gives JAR files the ability to be so versatile? The answer is embodied in the JAR file's manifest.

The manifest is a special file that can contain information about the files packaged in a JAR file. By tailoring this "meta" information that the manifest contains, you enable the JAR file to be used for a variety of purposes.