Abstract: Decomposition slicing is a slicing technique that captures all computation on a given variable regardless of the line number. This technique was originally proposed for the C language which is a structured programming language. Thus, this study proposes the slicing technique to slice the Java program by using the idea of decomposition slicing. The technique is called the Object Decom position Slicing (ODS) technique which consists of three steps. This study also presents the implementation of the ODS into a simple Java program.