Abstract: Methods, systems and computer program products are provided for extending an application written in a first programming language with methods of Java classes, wherein the first programming language cannot directly access the Java classes. Such extension may be provided by-encapsulating differences between the first programming language and Java and/or a memory model of the application and a memory model of Java utilizing at least one subroutine accessible to the application and at least one Java class. Thus, for example, differences in memory models may be overcome by a subroutine which utilizes the memory model of the application being configured to communicate with a Java class which utilizes the memory model the JVM and which can invoke Java methods. The at least one subroutine and the at least one Java class may then be utilized to invoke Java methods from the application.