Sony Ericsson T612 manual Java, Soft keys, Optional download features, Sandbox

White Paper T610/612

Java

The T610/612 supports J2ME CLDC/MIDP. It is ready to run applications written for handheld computers and mobile phones.

Applications are easily downloaded directly to the T610/ 612 using the browser, or may be installed from a con- nected PC. Applications such as the currency converter can obtain the latest exchange rates from the Mobile Internet and then make up-to-date calculations. It is also possible to access and download data from a company server.

T610/612 supports JSR-135 allowing control of the syn- thesizer for MIDI, I-melody and Tone sequence play- back.

Soft keys

When executing a MIDP application a lower portion of the screen is reserved for displaying soft keys associated with the application. The appearance of this soft key area at runtime depends on which base class the displayed application is derived from.The left soft key is for the first command in the command list and the right soft key is for the “More” list and “Help”.

Optional download features

The browser can download JAR/JAD files from WAP and HTML pages provided that the server supports the actual file types. T610/612 can also download JAD/JAR files from ordinary WAP servers provided that they sup- port the mime type for each of the file types.

Sandbox

J2ME/CLDC uses a sandbox. The sandbox includes a number of system components working together to ensure that untrusted applications cannot gain access to system resource.

J2ME

CLDC

Sandbox

Supported protocols

The T610/612 supports “Sun OTA recommended prac- tice for J2ME CLDC/MIDP” and ordinary MIDP 1.0 applications without extension API’s.

MIDP Application

running on

MIDP/CLDC/kVM

User Interface

JAR file	Persistent
resource	Storage

Internet

HTTP/	Services and pages
Datagram
	with response in
	HTML format

Other networked devices (datagram communication)

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