Java is one of the best cross platform environments for the development of software applications. It is because of this reason that the importance and necessity of Java Development cannot be overlooked. The extensively used programming language helps in developing wide varieties of applications ranging from mobile applications, supercomputers and enterprise servers. The immense popularity of Java has led to the advancement in the development techniques and there are many service providers that offer services in this field. The development of applications in Java is carried out through a combination of Compiler, Loader, Jar and JDB. Developments are made in such a way so that it allows highly flexible and customizable environment. Moreover, applications written and developed in Java are independent of platforms both at the binary and source levels. As a result, these can be easily executed from anywhere. It also offers the opportunity to run the same programs from large numbers of systems. Java is designed in such a way so that it supports the concept of garbage collections. As a result, it facilitates automatic memory management easily and flexibly. Users are not required to manage any memory issues. It is an object-oriented programming language and helps programmers to create modular programs. The concept of distributed computing has also become more feasible and easy with the help of Java.