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Engulu Paul
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I always find problems with files can someone help me with question

Develop a simple application that, when run, Welcomes the users and tells them the name of the last person to run the application, this information should be retrieved from a file. After welcoming the users, ask them for their name and save it to the file. Use the ClassLoader and Properties classes to load the file. You will need to investigate writing to files a little (can be also done using Properties class).
 
Steve Luke
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What problems are you having? Show all the related code that causes the problem.
 
Joe Ess
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Welcome to the JavaRanch.
As Steve points out, you haven't given us very much to work with. You should review our FAQ: How To Ask Questions On JavaRanch. You should probably start with this topic.
 
It is sorta covered in the JavaRanch Style Guide.
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