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14
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Java Collections, nivå, lekse
Låst
Null object pattern
Read about the null-object pattern on Wikipedia.
Use Files to correctly initialize the fileData field with a ConcreteFileData object in the Solution class's constructor.
If you have any problems reading the file in the pathToFile path, then initialize the field with a NullFileData object.
7
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Java Collections, nivå, lekse
Låst
Path 101
Read about all of the Path class's methods.
Find one that creates a relative path between the current path and a passed path.
Implement the getDiffBetweenTwoPaths method. It must return a relative path.
The main method is not tested.
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