Author: Wang Sen Source: 9CBS about Personal Java From the foregoing discussion we can know, Personal Java specifications are not actually defined in the CLDC or CDC under, although in the end it will be returned to the CDC Personal Profile, but now Its specifications continue in evolving. This is because there are many commercial products that have been made around the specifications of Personal Java, resulting in a large number of cases, so Personal Java's specifications will continue to evolve. When we introduced Java evolution, everyone must find that Personal Java is actually brought from Java 1.1, and the specification of Personal Java is based on the specifications of many Java 1.1, but not all specifications need. Personal Java is especially suitable for consumer electronics with rich graphic display capabilities, so we can find that the JavaSoft website is based on the reference implementation of the Personal Java, which is built on the Windows CE, maybe everyone will be compared to compare PDA's product (it is PDA), but Windows CE itself is indeed in line with the conditions of the target platform specified in the Personal Java specification, and it is very powerful for the ability to connect to the Internet network, and is very powerful for graphics (color LCD) . At present, you can download the original code of the References of the Personal Java 1.2 in Javasoft's website and the original code of the Personal Java Run-Time Environment (Personal Java Run-Time Environment), but a pity that 1.0 version of Personal The Java execution environment only supports Windows CE version 2.11, and only supports two processors with SH3. At present, there are many PDAs that perform Windows CEs, which is not used by these two processors. Compared with the machine uses strong-arm, if you don't have your PDA is not MIPS or SH3, you may go to the Internet to find other vendors Provided, the Personal Java execution environment can be performed on other processors. Just like developing other PDA programs, you don't have to buy a PDA to test, and the Javasoft website also provides the Personal Java emulator, allowing you to test your development to the Personal Java environment under the Windows or Solaris operating system. Executed applications. This emulator is called Personal Java Emulation Environment (PJEE), you can download PJEE in http://java.sun.com/products/personaljava/pj-emulation.html. In addition, you must use the version of JDK 1.1.7 to develop applications that can be performed on the Personal Java execution environment or PJEE. Perhaps you will notice that the reference is now available to two, one is the "Touch" version, one is a complete version. The so-called "Touchable" version means "the most realistic" of the Personal Java version. In fact, we also recommend us on the JavaSoft website. If you want to develop the Personal Java app, it is best to use the Touchable version. In addition to the multi-commercial version of the Personal Java, it can be guaranteed according to the Touchable version. Your app can be implemented in all Personal Java.
