Java’s major benefits for cellular phones

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According to Sun’s Chu, one of Java’s major benefits for cellular phones is support for packet-based networks running TCP/IP. Using TCP/IP makes it easier to write applications that communicate directly with the phone, rather than relying on an intermediate technology such as the wireless application protocol (WAP). Also, Chu said, Java, unlike WAP, supports pictures and colors. In addition, he explained, the Java environment provides good security because it includes a sandbox that limits downloaded code’s access to the rest of a host system. Moreover, Java’s ability to work with different platforms is important in the fragmented cellular-phone market. This capability lets a Java-enabled phone run applications and services written for other mobile platforms and also lets software vendors save time and money by writing a single, Java-based version of an application to run on multiple platforms. And Java-enabled phones and servers could communicate directly with each other, thereby enhancing interactive applications. Java enables smart-phone users to download applications directly from the Internet. Similarly, Java lets users download Java applets that customize their devices in various ways, such as with special ring tones or improved caller ID. This lets users get new features more easily. In the past, users had to buy new phones, run new applications remotely using WAP, or download programs first downloaded to a PC. Meanwhile, there are many Java developers, which make it easier for vendors of Java-enabled mobile devices to find people to write their software.