To get 240 fps (frames per second) in Minecraft Java Edition, you need to optimize your computer's hardware and software settings and adjust the in-game graphics settings. Here are some tips on how to increase your fps in Minecraft Java Edition:
Upgrade your hardware: If your computer doesn't meet the minimum system requirements for Minecraft, you may experience low fps. To increase your fps, you can upgrade your processor, graphics card, and RAM.
Optimize your operating system: You can improve your fps in Minecraft by optimizing your operating system's settings. For example, you can disable unnecessary background tasks, update your drivers, and defragment your hard drive.
Use a lightweight resource pack: A resource pack is a collection of files that modifies the game's graphics and sounds. Using a lightweight resource pack can improve your fps in Minecraft.
Adjust the in-game graphics settings: In Minecraft, you can adjust the graphics settings to optimize your fps. For example, you can turn off shadows, particles, and entity shadows, and set the render distance to a lower value.
Use a performance-enhancing mod: There are various mods that can improve your fps in Minecraft, such as Optifine and Fabric. These mods optimize the game's graphics and performance, allowing you to run Minecraft smoothly at high fps.
Keep in mind that getting 240 fps in Minecraft may not be possible on all computers, as it depends on the hardware and software capabilities of your system.