Java 2 Platform Micro Edition (J2ME), a flavour of Java architecture, is aimed at low memory consumer devices, typically less that 2 Mbytes. The architecture consists of three layers: Java virtual machine, configuration and profiles. The virtual machine sits on top of the host operating system. Configuration sits on top of the virtual machine and defines the java language and virtual machine features. Profile, which is the topmost layer, addresses the specific demands of a certain vertical market segment or device family. This paper is an investigation on J2ME specifications and it summarises J2ME architecture and different technologies that are aimed to work with it.
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