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Java™

What is Java™?

Java™ is a new technology enabling use of powerful applications in the mobile phone area. 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.

Such applications may be, for example, a wide range of games and appealing applications like action

and logic games, agenda, e-Mail reader, Web browser…

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

ava™

pplication

escriptor. It is a small file describing the content of a JAR file (version, vendor name,

size…) and displayed by the mobile phone.

JAD file size is usually less than 2 kilo-bytes large.

JAR file stands for

ava™

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.

Downloading a MIDlet (Java™ game or application)

MIDlets are easily downloaded in the mobile phone through the Java Applis or Accessories menus or through the WAP browser.

In almost all cases, you will first receive a JAD file which will be displayed on the screen.

Much care must be given in examining the content of the file as explained further.

When you select a JAD file, your mobile phone downloads it, displays data contained and prompts you to acknowledge the JAR

file download.

The popup displays information below:

• Name of the MIDlet

• Version

• Size (JAR file size)

• Vendor name

• Security status (

IMPORTANT:

see "Security considerations" paragraph below)

• JAR file URL.

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