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25.5. Sudoku Example: Classes and Objects
- An object belonging to the
Settingclass is used for triggering the operations that accompany the allocation of a value. The presence of aSettingfact is used in all rules that should detect changes in the process. This is to avoid reactions to inconsistent intermediary states. - An object of class
Steppingis used in a low priority rule to execute an emergency halt when a "Step" ends unexpectedly. This indicates that the puzzle cannot be solved by the program. - The class
org.drools.examples.sudoku.SudokuExampleimplements a Java application combining the above components.
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