Improved Adaptive Generational Garbage C ollection Algorithm for Java Card

The memory size of Java is very limited, while the Java Card specification does not specify the garbage collection mechanism, resulting in the utilization of system memory resources is not efficiently. In order to solve this problem, we adopted cross-layer design ideas, took Flash physical storage characteristics and the features of Java Card object allocation into consideration, designed the generational adaptive mark-sweep-copy garbage collection algorithm for Java Card. In this paper we use small part of RAM resource, effectively reduced the number of write operation of Flash, and provide a good balance of wear and then prolong the life of the Flash. The Algorithm of the garbage collection significantly improved the system performance.