LonelyCraft library

Minecraft guides — page 10

Minecraft Java and Bedrock guides: shaders and mods, FPS settings, survival, farms and running your own server. Each guide states the game edition, requirements and ways to check your results.

Development · 3 min

A Paper 26.3 command: arguments, permissions and console output

New BasicCommand instead of legacy CommandExecutor: full example /trailinfo, sender check and failure matrix.

Java server development on Paper

Development · 3 min

Background reads in Paper: return results to the same player session

Working example /note: limited file read, return to main thread, filter out stale requests, and disable plugin.

Java server development on Paper

Development · 3 min

Installing a Java 26.3 data pack: pack.mcmeta and your first function

Exact 121.0 format, function structure and /function demo:hello check without the extra subfolder in the ZIP.

Java; training package strictly for release 1.21

Development · 3 min

Inventory snapshots before a minigame: checks before clearing items

The diagnostic command saves ItemStack in YAML and compares them after restart; The return log and limitations of the example are discussed separately.

Java server development on Paper

Development · 3 min

Minecraft statistics on a website: validate JSON and access boundaries

Local API with reproducible 200/404, browser fetch and scheme for delivering game facts without revealing the server key.

Java server development on Paper

Development · 3 min

Minigame states: reject stale timers and duplicate finishes

We run the Java round model with runId, check the four results and associate the states with saving and clearing the arena.

Java server development on Paper

Development · 3 min

Paper events: handle only permitted block breaks

Registered listener, MONITOR, canceled event and checking filters using a specific STONE example.

Java server development on Paper

Development · 3 min

Paper menus: prevent item transfers and close windows safely

Full example of /safemenu with its own InventoryHolder, click/drag cancellation and window check before deferring action.

Java server development on Paper

Development · 3 min

Validating plugin YAML: types, limits and atomic application

We read config.yml into a separate model: explicit zero, a string instead of a number, a range and saving the previous value on failure.

Java server development on Paper

Development · 3 min

Your first Paper 26.3 plugin: the project, JAR and loading checks

Complete minimal Java project 25: fixed Paper API dependency, manifest, build and startup error diagnostics.

Java server development on Paper

Performance and security · 3 min

Defending against lag machines: find and isolate the source

How to distinguish a heavy construction site from an incident, localize a farm by profile and introduce verifiable restrictions.

Paper; prevention, diagnosis and administration of your own world

Performance and security · 3 min

FPS, TPS, MSPT and ping: find what is slowing Minecraft down

The camera jerks, the block returns, or the players freeze: understand the signs of the client, server and network.

Java and Bedrock; spark-command for server administrator