Learn the seven techniques J2ME need to Master

J2ME programming is the application of Java in the field of smart home appliances, mainly including the following technologies:

1. Advanced user Interface

The advanced user interface refers to theJ2MEin programmingForm (form),TextBox (text Box),List (list Box)and theAlert (Prompt message box)And the use of some of these controls, including, of course, the corresponding event handling. Apply in general such as landing forms, about forms and hints, etc.

2. Low-level user interface

The low-level user interface refers to the use of Canvas and Graphics classes, as well as the corresponding event handling, application and game programming, and the rendering of special interfaces.

3. Record Storage System

The recording storage System is the technology supported in the phone for permanent data preservation. Because there is no concept of data files in the phone, the data that is normally saved can only be saved in the form of records.

4. Sound processing System

midp1.0 no sound processing is supported, but many handset manufacturers such as siemens etc are supported, so playing sounds is also a skill to master. The technology uses the api more related to handset manufacturers. But the midp2.0

5. Network Programming

Network programming refers to the use of mobile phoneGPRSorCDMANetwork toHTTPAgreement orSOCKETform to connect to the network. Mobile Support nowHTTPThe majority of network programming, supportSOCKETis relatively small. So network programming is a temporary useHTTPprotocol for programming.  

6. Multithreading

Multithreading is one of the core technologies in J2ME applications, because network programming and low-level user interface programming are responsive and require processing into multiple threads. So it must be mastered.

7. Short Message Programming

Many phones offer nokia siemens samsung j2me Span style= "font-family: ' The song Body '; The sending of SMS is also a more commonly used technique.  

8. Other

Of course, according to the different vendors also provide some other technologies, such as the Siemens API support files,Nokia 's API support reading system contacts and so on.

Learn the seven techniques J2ME need to master