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Then look at using the BufferedReader class. It can read the lines from the file as Strings.

Look at the Double class. It has a parse method for doing that.

The Scanner class can be used for reading text files. Use the constructor that takes a File object and use one of the next methods to read in the lines from the file.
If all the $ amounts are in...

Do you have any specific questions about what you are trying to do?