How to read the data in text file seperated by by ',' in java using IO Operations

How to read the data in text file seperated by by ',' in java using IO Operations

in Text file

data like

raju 45,56,67 ramu 46,65,78

raji 34,23,56

this is the student marks in text file.this data read and calculate the marks and sent the another text file like

raju pass 67% ramu pass 56%

raji fail

how to write the program ....

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