Here’s some links to OpenJDK downloads for various platforms, in case you don’t already have one. Windows, Linux, Solaris: Download the JDK directly from Sun’s Java SE Downloads page.

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.

How to install Java on your computer To run Java apps, open JAR files or compile some source code into bytecode you’ll need to install Java. To download and install Java on Windows, MacOS or Ubuntu, ...

A new Java JAR inspection and insights tool, called Jarviz, helps developers find different bytecode versions in a JAR, querying it for attributes, services, and more. Sonatype statistics show ...

Starting in April, Oracle will treat JAR files signed with the MD5 hashing algorithm as if they were unsigned, which means modern releases of the Java Runtime Environment (JRE) will block those ...