WebProxy 2.1

opa , WebProxy eh uma ferramente uzada pra testes em seguranca, eu baxei ele , e quando vo instalar
sh WebProxy...bin
Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...
No Java virtual machine could be found from your PATH
environment variable. You must install a VM prior to
running this program.

QUE QUE EU PRECISO PRA INSTALAR ELE Q EU NAUM ENTENDI ? vlw obrigado