Troubleshooting

If you only want to run a JAR file and do not want to fully install Java on your system, you have a couple of lightweight options:

• Use a Portable Java Runtime:
  Download the “jPortable” Java Runtime Environment from PortableApps.com, along with the “jPortable Launcher.” This setup allows you to run JAR files without installing Java system-wide-just extract and run from a folder1, 4. jPortable64 allows you to easily add a 64-bit Java® runtime environment to your portable device. No Java® runtime environment needs to be installed on the local machine and no admin rights are required. JARs can be run using our jPortable Launcher.

• Extract and Use Java Without Installing:
  Download the Java Runtime (JRE) or Java Development Kit (JDK) as a ZIP or tar.gz archive (Oracle often provides these). Extract it to a folder, then run your JAR file using the included java.exe without a full installation. For example, from the command line:

  text

  path\to\java\bin\java -jar yourfile.jar


  This method avoids system changes and keeps Java self-contained 1, 4.

Both options let you run your JAR file with minimal system impact and no permanent installation.

This page provides solutions to common problems encountered when running yEd or LogicReader.

• Q: What should I do if my issue isn’t listed?
  A: Contact support with a detailed description, including error messages and screenshots.