Learn how a Java JAR file (Java Archive) allows you to package compiled code and other resources in a single file that is easily deployed and executed resources.

A JAR file is an archive file but is more than a file compression format. Here's how to open, run, or execute JAR files.

I've got a problem that I'm stuck on. How do I programmatically get the executing jar file's absolute path?I'm trying to look for a folder that is relative to the jar file's directory but I'm ...

This post introduces you to multi-release JAR files. Discovering multi-release JAR files Many third-party Java frameworks and libraries support several versions of the Java platform.

Newer versions of Java now require all JAR files to be signed with a valid code-signing key, and starting with Java 7 Update 51, unsigned or self-signed applications are blocked from running.

Run the jar tool without arguments to see its usage. You pass it the -M option to create a JAR without a manifest. You won't be able to run the JAR file with java -jar, but you will still be able ...

Here's a quick example of how to use Java's jarsigner to digitially sign JAR files.