| 摘要 |
PROBLEM TO BE SOLVED: To reduce the time to be required for maintenance of an application program. SOLUTION: The application program 1 is provided with methods B stored in a data base 3 and having the same name and calls a class selecting method 4 to dynamically select a class A to satisfy conditions specified by the application program 1 when the methods B of plural classes A with the same class name are called. Then, the method B of the class A to satisfy the conditions specified by the application program 1 among the methods B of the plural classes A of the same name stored in the data base 3 is automatically executed.
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