Event4J

A annotation-based event system for java

Features

• Annotation-Based
  • Just implement Listener and annotate with @EventHandler
• Lightweight
• 0-Dependency
  • Optionaly uses ASM for faster event invocation
    • ASM invocation is an order of magnitude faster than reflection
• Fast
  • Benchmarks available
• Thread Safe
  • Synchronous Events
    • Only one of these events may be executing at a time
    • Firing one of these events may block
  • By default, multiple events may be executed from multiple threads

Requirements

• Java 8
  • Don't use outdated java!
• ASM (Optional)
  • Makes event invocation an order of magnitude faster