Mohammad Shamsul Arefin , Structural Operational Semantics of Calling Methods in Java, Asian Journal of Information Technology, Volume 3,Issue 11, 2004, Pages 1059-1064, ISSN 1682-3915, ajit.2004.1059.1064, (https://makhillpublications.co/view-article.php?doi=ajit.2004.1059.1064) Abstract: A good understanding of programming language can be developed and understood in a machine-independent manner called structural operational semantics. It is a mathematical model for specifying the meaning of a language by defining the effect of a running program in terms of its structure. The emphasis of this work is to present the structural operational semantics of calling methods that return type is void in Java. Keywords: