JRE Tool
Some launchers mark every Java without javac.exe, that is every JRE, as disabled by default, and a JRE newer than Java 8 can never be selected at all. A computer with only a JRE installed then cannot start the game with it. The JRE Tool lifts this restriction so a JRE is available by default, just like a JDK.
The tool is separate from the launcher repair; each can be used on its own and their backups do not interfere.
How to use it
- Close the launcher.
- Choose JRE Tool on Campfire's Tools tab.
- Campfire looks for the launcher in its own folder; you can also click Browse or drag it into the window.
- When Changes shows Pending, click Allow JRE.
Afterwards, newly found or imported JREs are enabled by default.
JREs already marked as disabled
A JRE the launcher had already recorded as disabled before the change is not re-enabled automatically. Enable it once in the launcher's Java list.
What changes
The tool removes only the two JRE-related conditions:
- Java is no longer disabled by default for lacking
javac.exe; - JREs newer than Java 8 are no longer excluded from selection.
The check that the Java architecture must match the system is kept, so a Java that cannot run is never chosen. Only a handful of bytes change; the file size and bundle layout stay the same and nothing is repacked.
Inspection results
| Message | Meaning |
|---|---|
| JREs are disabled by default and can be allowed | Ready to apply |
| JREs can already be used | Already applied |
| This build has no JRE restriction | Nothing to do |
| The selected file is not a supported launcher | That launcher does not have the restriction |
| The code differs from known builds and is not supported yet | The patch point cannot be confirmed; nothing will be changed |
Backup and restore
The launcher as it was before is kept in the same folder as a .jre.bak file, independent of the .bak file of the launcher repair. Click Restore to bring it back.