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With the development of information technology,mobile communication devices become necessary.Owing to the development of hardware,mobile communication devices provide high-quality communication,but they also provide a variety of useful application. J2ME,a consumer-target device,comes prepackaged as a robust,secure,system-independent,and scalable platform.The character makes it prevalent as a development platform in mobile devices. Supported by well-known companies,such as Sun Microsystems,Nokia and Motorola,J2ME.Based development becomes hot. Mobile phone software,which should use little space and rBn efficiently, belongs to embedded software.Electronic dictionary systems are running well in Pcs,but it is difficult to be realized in mobile phones.A special design is needed to adapt mobile phone.The paper proceeds in the theory study,conducts the experiments,develops the projects centering round the J2ME.The system which is a very good English learning assistants has not only realized English and Chinese enquiries,add,delete and other functions,but also helps English learners remember words.Firstly the paper gives analyses of the significance,realizing possibility and the study status about the customer classification. Secondly,analysis the architecture of J2ME platform,MIDP application development process as well as the development tools.Thirdly,makes a detailed description about the design of the object, application environment and related functions division and the realization of the system. Finally,tests the system,point out the shortcoming and prospects of the research.
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