Download Java (JRE) Offline Installer to Run JAR Files

Get a full offline Java runtime installer for Windows, Mac or Linux, pick JRE or JDK and the right version, and set up double-click for .jar files.

Step 1: Check Whether Java Is Already Installed

Step 2: Pick JRE or JDK, and a Version

Step 3: Download the Offline Installer

Step 4: Install Without Internet

Step 5: Run Your JAR

Summary