, which is best suited for Java 8. Minecraft version 1.16 and above began transitioning to newer Java versions (Java 16/17), which are not yet fully compatible with the project's current compilation pipeline. The LWJGL Bottleneck
While we wait for a "full" 1.16 stable release, you can still dive into the action: 116 eaglercraft full
there is no official, full version of Eaglercraft 1.16 available Current State of Eaglercraft Versions , which is best suited for Java 8