>>>>> "Godmar" == Godmar Back <gback@cs.utah.edu> writes: Godmar> # gcj HelloWorldApp.java Godmar> /usr/lib/crt1.o(.text+0x36): undefined reference to `main' Godmar> /opt/local/lib/libgcj.so: undefined reference to `_Jv_Compiler_Properties' Godmar> collect2: ld returned 1 exit status You need to use the --main option. Tom