What is LauncherJava?

Active Software Public Owner: Org

How It Works

┌─────────────┐     ┌──────────────┐     ┌─────────────┐
│  ProjT      │────▶│ LauncherJava │────▶│  Minecraft  │
│  Launcher   │     │   (Java)     │     │    JVM      │
│  (C++)      │     │              │     │             │
└─────────────┘     └──────────────┘     └─────────────┘
      │                   │
      │   stdin           │   exec
      │   (script)        │   (launch)
      ▼                   ▼

Launch Sequence

1. C++ launcher sends launch script via stdin
2. LauncherJava parses the script
3. Waits for launcher command
4. Executes Minecraft with configured parameters

---

License

Available under GPL-3.0 (with classpath exception), sublicensed from its original Apache-2.0 codebase.

---

Related Documentation

• Program Info — Application identity
• JavaCheck — Java detection