-- (1) start it with `gdb ./mate' and then `run <classfile>'
-- (2) on getLine, press ctrl+c
-- (3) `br *0x<addr>'; obtain the address from the disasm above
-- (1) start it with `gdb ./mate' and then `run <classfile>'
-- (2) on getLine, press ctrl+c
-- (3) `br *0x<addr>'; obtain the address from the disasm above