Seeing the crash message “java.lang.runtimeexception: null” when starting a game feels like hitting a wall. Many players instantly search forums, but answers are scattered and confusing. This detailed guide brings everything together in one place with fixes that actually work.
The error usually comes from corrupted game files, old Java installations, or driver conflicts. Modded games like Minecraft often suffer more because mods don’t always stay updated with patches. The article explains how to scan and repair game files, update Java safely, and download official GPU drivers for smoother gameplay. It also outlines how to manage mods and allocate more memory for Java-based games. If all else fails, a clean reinstall with saved backups almost always restores stability.
What makes this guide stand out is the prevention advice keeping your system updated, monitoring hardware temperature, and using trusted mods only. Instead of struggling with random crashes, players can enjoy uninterrupted gaming sessions again.