Java Applets run in a womb provided by the web browser that offers them services, and prevents them from doing
anything naughty such as file I/O or talking to strangers (servers other than the one the Applet was loaded
from). The analogy of Applets being like children lead to calling the environment they run in the
sandbox. A sandbox is a safe place for children to play. Sandbox is also an irreverant term
for any company’s R & D department.