Which package needs to be imported to use CryptoService in java?

The operation is relatively simple. If you don’t believe me, try Sony Ericsson, Samsung and Nokia! In addition to improving the screen hardware configuration of the S40 third version, Nokia also designed a new human-machine interface. The zodiac vector icons have more beautiful visual effects and strengthen the theme mode supported since the S40 second version. Supporting dynamic desktop layout is more in line with users' requirements for DIY desktop style. The shortcut icon menu similar to the Windows Mobile system that appears on the standby interface can be customized by the user, effectively improving operating efficiency. The excellent display effect and more user-friendly operation interface lay a solid foundation for the excellent performance of the new S40 version of the mobile phone in multimedia. Samsung cannot change the theme!

The first is resolution, which is one of the most important updates of S40 version 3. The standard resolution of the new S40 3rd Edition will be 240X320, the standard QVGA resolution, which means that Nokia has finally broken away from the tradition of small screens and begun to develop in the direction of large screens. You know, this resolution is higher than the standard S60 2 The 176×208 series platforms are all high.

The second is color. It is easy to see from this picture that the new version of S40 provides higher color performance based on high resolution. The 26W color will be the standard configuration of the S40 3rd Edition mobile phone.

The third is graphics, judging from the icons. Obviously, the icons this time are more beautiful. The higher use of colors and the application of 3D models are the reasons for the enhanced visual effects of the icons. But if you look carefully, you can see that this time the icon uses a vector icon! And the text under the icon uses vector text! Mobile phones on the new platform will support the adjustment of font size in various details. For example, you can use extra large fonts when writing text messages and small fonts when browsing the web.

The fourth is user habits. This time the menu interface can be DIYed. For example, in the main menu, you can place any icon anywhere you want, and we can finally put the game in the middle to enter the game more quickly. For example, you can customize the viewing method of each level of menu. You can use the list mode to view in the song directory to quickly locate a large number of songs, and use the preview mode to preview multiple pictures at the same time when switching to the picture directory.

The fifth is dynamic desktop. Dynamic desktop will be one of the biggest impacts that S40 3rd Edition will bring to users. S40 version 3 will support dynamic desktop. What is dynamic desktop? Well, from this picture we see the following things:

Shortcut icons

Schedule

To-Do List

Music Player

Many people may say: This thing seems to have been seen somewhere before. Yes, this interface is almost the same as the desktop of the Windows Mobile operating system. It's just the same.

Series 40 fifth edition is a complete hardware, software and application program interface (API) system. It integrates Java(TM) platform Micro Edition (JavaME) technology and supports the latest version of mobile information devices. Framework (mobile information device profile, MIDP2.1), provides an enhanced user interface (UI), using this interface developers can add richer multimedia applications and services to many Nokia mobile devices.

As the latest and largest mobile development platform to date, the fifth edition of Series 40 implements the advanced JSR-248 Mobile Service Architecture specification. It was completed in 2006 and was led by Nokia and Vodafone. Task force design can reduce fragmentation and provide a unified set of Java technologies to a large number of mobile phones. JSR-248 is also a key component of the S60 platform. Nokia has committed to supporting the operation of JSR-248 on both platforms, ensuring a high degree of portability of applications between Series 40 and S60 devices.

Developers can provide richer 3D sound experiences in games and multimedia applications using the Advanced Multimedia Supplements (JSR 234) specification. The new Series 40 platform supports other JSR (Specification Request) implementations of a series of Java APIs, including:

- Java API for Bluetooth v1.1 maintenance release (JSR 82) , and also supports the Object Exchange (OBEX) protocol;

- Mobile Media API (JSR 135), enabling easy acquisition and control of basic audio and multimedia resources;

- J2ME (TM) Web Services Specification (JSR-172), which implements the Remote Procedural Call package to communicate publicly or privately through the Simple Object Access Protocol (SOAP) Get Web services;

- J2ME Security and Trust Services API for J2ME (JSR 177), including the SATSA-CRYPTO option package to provide cryptographic functions;

- Upgrade from Java MIDP 2.0 to 2.1, additionally supporting media hard-keys when Canvas (the area of ??the screen where an application can draw or capture user input) is displayed.

The fifth version of Series 40 allows mass mobile device users to experience streaming video, image rendering, mobile 3D images and adjustable 2D vector images. Series 40 fifth edition also supports the latest version of Adobe Flash Lite 2.1. Compatible platform Flash Lite 2.1 supports the accelerated development and delivery of graphics-rich mobile content and includes audio file playback and streaming capabilities, which can enhance audio for mobile gaming and multimedia experiences. with music effects.

In addition, the fifth edition of Series 40 supports Bluetooth and IrDA (infrared) connection and synchronization functions, supports many mobile browsing standards, and can provide a stable mobile browsing environment. It widely supports SMS text message functions and multimedia message functions (MMS), and is truly compatible with many forms and categories of MMS content.

Nokia has launched a platform strategy to support mobile application development in all markets, of which Series 40 fifth edition is an important element. By providing a common technology platform across many phones, Nokia's developer platform program maximizes developers' opportunities to increase productivity while minimizing the need to port applications and services to individual phones. Developers can add core functionality on top of platform technology and then optimize their applications for user interface or technology extensions on specific target devices.

New development tools, including the Series 40 5th Edition Software Development Kit (SDK) with device emulator, Java libraries, APIs (including Nokia UI API) and corresponding documentation, will be developed by Forum Nokia (Nokia 's Global Developer Support Program) became available in June 2007. For more information about Series 40 Fifth Edition Java technology, please log in