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Hi,

How to detect eof character in a data file? I am reading a data file generated from UNIX. I use java scanner, the scanner's hasNextLine() returns false in the middle of the file. I suspect...

Hi Alister & Franklin52,

Thanks so much to you both for the code and detailed explanation. Appreciate your help!

Hi Franklin52 & Alister,

We would sort the file by key field first.

Alister,

Could you please explain your code a little bit?

Thanks

Hi Rdcwayx,

Thanks for the quick reply. My question is, I am dealing with large amout of data. Probably about 10 million. Will this have performance issue?

Thanks

Hi, I have file like this -

ABC 123
ABC 456
ABC 321
CDE 789
CDE 345
FGH 111
FGH 222
FGH 333
XYZ 678

I need the output like this:

ABC 123,456
CDE 789,345
FGH 111, 222
XYZ 678
...