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How to use matcher and pattern class to comapre two text files

 
Greenhorn
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Hi,
how to use matcher and pattern class to compare two text files
I have two text files one has student details like roll number ,subject codes ,internal and external marks..etc!and other file has roll number ,internal and external marks.so i have to compare these two files if roll number matches in both files then i need to retrieve internal and external marks.
so how to write code for this.
thank you in advance.can you help me out about this?
 
Ranch Hand
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Hi,

Please post the code you have written so far and which bit you are stuck on and then someone will help you.

Thanks.
 
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