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Table of Contents
Applying changes without restarting Minecraft
Restarting Minecraft can take a hefty amount of time. Thankfully, there are tools that allow you to apply some changes while the game is running.
Reload changed classes
In Eclipse or Intellij IDEA, run Minecraft in debug mode. To apply changes in code,
do Run → Reload Changed Classes in Intellij IDEA or save in Eclipse.
Note: this only allows you to change method bodies. If you do any other kind of change, You will have to restart.
However, if you use DCEVM, you will be able to do most changes, including adding and removing methods and classes.
Reload assets
After you make changes to assets such as textures and block/item models, you can reload changed classes and press F3 + T to apply changes without restarting Minecraft. More specifically, this is how to reload anything the mod provides as a resource pack.
Reload recipes and loot tables
You can apply any change you made in the data/ directory (including recipes and loot tables) by reloading changed classes and then using the Minecraft command /reload.