Systems using GNU Classpath: gcj

• Java front-end to the GCC compiler

• • Java ≃ C++
  • • GCC backend performs ± same optimizations as with other languages (C, C++, Fortran, Ada, Pascal, Cobol, ...) → fast execution
    • Static compilation produces stand-alone executables
    • • But java programming language is a dynamic! → Run-time library contains a simple bytecode interpreter for dynamically loaded classes → loadClass() can use a mapping to native shared libraries