Mechanism for dynamic selection of an object's method

A computer program product comprising:

• a computer usable medium having computer readable program code embodied therein for implementing an object oriented programming language, the computer readable program code comprising:
• (a) computer readable program code in respect of at least two code blocks for at least one method of an object of a specified class, each of said code blocks containing a different implementation of said at least one method, and
• (b) computer readable program code for accessing a desired code block at run-time on a per object instance basis so as to allow selection of a desired implementation of said at least one method without requiring instantiation of an object of a different class;
• said selection of which implementation to invoke being integrated into an existing invocation method of said language and thus being transparent to a calling application invoking said at least one method.