Java 2 Micro Edition (J2ME) is a platform designed for developing applications on mobile devices and embedded systems. It provides a set of tools and APIs that allow developers to create software for devices with limited resources, such as cell phones and PDAs. J2ME is part of the larger Java platform, which is known for its portability and versatility. J2ME consists of two main components: the Configuration, which defines the basic set of APIs for a device, and the Profile, which adds additional APIs for specific types of devices. This modular approach enables developers to create applications that can run on a wide range of devices while optimizing performance and resource usage.