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mvn_MCMANAGE

manage mc servers with java

Enhanced Minecraft Server Manager

A comprehensive Java Swing application for managing Minecraft Paper servers with automatic JAR downloading, server launching, and console management.

Features

• Server Management: Create and manage multiple Minecraft server instances
• Paper Integration: Fetch and download Paper versions automatically from the official API
• JAR Management: Automatic downloading of Paper JAR files with latest builds
• Server Launching: Start servers with custom RAM allocation and port configuration
• Console Integration: Real-time server console output and command input
• EULA Handling: Automatic EULA acceptance and server.properties generation
• Persistent Storage: JSON-based configuration saving in the root directory
• Multi-Server Support: Manage multiple servers simultaneously

Requirements

• Java 11 or higher
• Maven 3.6 or higher
• Internet connection (for JAR downloads)

Building the Project

mvn clean compile

Running the Application

Option 1: Using Maven

mvn exec:java

Option 2: Using JAR file

mvn clean package
java -jar target/minecraft-server-manager-1.0-SNAPSHOT.jar

Usage Guide

1. Creating a Server

1. Fetch Versions: Click "Fetch Paper Versions" to load available Paper versions
2. Add Server: Fill in the server details:
   • Name: Server instance name
   • Port: Server port (default: 25565)
   • RAM: Memory allocation in GB
   • Version: Select a Paper version from the dropdown
3. Save: Click "Save Servers" to persist your configuration

2. Setting Up a Server

1. Select Server: Choose a server from the list
2. Download JAR: Click "Download JAR" to fetch the Paper server JAR
3. Automatic Setup: The system will:
   • Create server directory structure
   • Generate eula.txt (automatically accepted)
   • Create server.properties with your port
   • Copy the JAR to the server directory

3. Running a Server

1. Select Server: Choose the server you want to start
2. Start Server: Click "Start Server" to launch the Minecraft server
3. Monitor Console: Watch real-time output in the console area
4. Send Commands: Use the command field to send server commands
5. Stop Server: Click "Stop Server" to shut down the server

Project Structure

• Main.java - Application entry point
• EnhancedServerManagerUI.java - Main GUI interface with server management
• ServerManager.java - Core server management and JAR downloading logic
• ServerLocation.java - Legacy server location model
• JSONManager.java - JSON persistence utilities
• PaperAPIClient.java - API client for fetching Paper versions

Directory Structure

minecraft-server-manager/
├── servers.json              # Legacy server locations
├── server_instances.json     # Enhanced server configurations
├── servers/                  # Server instance directories
│   ├── server1/
│   │   ├── paper-1.20.1-123.jar
│   │   ├── eula.txt
│   │   ├── server.properties
│   │   └── world/
│   └── server2/
└── jars/                     # Downloaded JAR files
    ├── paper-1.20.1-123.jar
    └── paper-1.21.1-456.jar

Server Configuration

Automatic Files Generated

• eula.txt: Automatically set to eula=true
• server.properties: Basic configuration with your specified port
• JAR files: Downloaded from Paper API with latest builds

Memory Configuration

• Xmx: Maximum heap size (RAM GB × 1024 MB)
• Xms: Initial heap size (RAM GB × 512 MB)

API Integration

The application integrates with the official Paper API:

• Versions: Fetches available Paper versions
• Builds: Downloads latest builds for selected versions
• JARs: Automatic JAR file management

Troubleshooting

Common Issues

1. Port Already in Use: Change the port number in server configuration
2. Insufficient Memory: Reduce RAM allocation or close other applications
3. JAR Download Fails: Check internet connection and try again
4. Server Won't Start: Check console output for specific error messages

Console Commands

Use the command field to send server commands:

• stop - Stop the server gracefully
• save-all - Save all worlds
• list - List online players
• op <player> - Give operator status
• whitelist add <player> - Add player to whitelist

Data Storage

• Server Configurations: Stored in server_instances.json in the root directory
• Server Files: Each server has its own directory under servers/
• JAR Files: Cached in jars/ directory to avoid re-downloading

df9ed6a (first shit)