
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Please write it in Java
Write a class definition of a class named 'Value' with the following:
- a constructor accepting a single integer parameter
- a constructor with no parameters
- a method 'setVal' that accepts a single parameter,
- a boolean method, 'wasModified' that returns true if setVal was ever called for the object.
- a method 'getVal' that returns an integer value as follows: if setVal has ever been called, it getVal returns the last value passed to setVal. Otherwise if the "single int parameter" constructor was used to create the object, getVal returns the value passed to that constructor. Otherwise getVal returns 0.
Please write it in Java. Most of the answers that can be searched using Google are not correct for this question.
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