ProGuard - Java Obfuscator and more


  • Terminology/Concept 
  • ProGuard 
  • ProGuard - Maven support
  • ProGuard - Ant support


What is Shrinking? 

  • Java bytecode contain a lot of unused code, especially if it includes program libraries 
  • Shrinking programs such as ProGuard can analyze bytecode and remove unused classes, fields, and methods. 
  • The program remains functionally equivalent, including the information given in exception stack traces

What is Obfuscation? 

  • Compiled bytecode still contains a lot of debugging information: 
    • source file names, line numbers, field names, method names, argument names, variable names, etc. 
  • This information makes it straightforward to decompile the bytecode and reverse-engineer entire programs.

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