User guide

64 Java™
If you do not want to enter the security menu, simply select "Back"
button. You can proceed by selecting "
OK " button.
The menu displayed allows you to increase or decrease permissions
currently applied to the current MIDlet for each of the security
groups.
When you set a more permissive authorization to a security group
than the current value, mobile phone asks you to confirm your
increased risk exposure.
The maximum risk exposure increase is limited by the security
status.
What is Java™?
Business applications and games are easily downloadable by the
end-user on a Java™ featured handset.
Your mobile phone is a MIDP 2.0 compliant Java™ platform which
implements WMA (SMS support) and MMAPI (Multimedia support)
options, providing an exciting environment to run highly graphical,
networked and intuitive MIDP applications.
What is a MIDlet?
A Java™ application or a game designed to run in a mobile phone is
named a MIDlet (MIDP applet).
A MIDlet is usually made of 2 files:
- The JAD file
- The JAR file
JAD file stands for
J ava™ A pplication D escriptor. It is a small file
describing the content of a JAR file.
JAR file stands for
J ava™ A rchive. It refers to the application data
themselves (program, images, sound). A
JAR file may be up to 200
kilo-bytes large.
Note : In rare circumstances, MIDlet vendors may provide no JAD file
and the MIDlet is the JAR file alone. In such a case it is your only
responsibility to evaluate the risk to download the JAR file without
possibility of consulting the JAD file.
252959493_my300C_en.book Page 64 Jeudi, 24. mai 2007 3:01 15