Reading file like hashmap (datamap)

Hi,
I am wondering if we can extract a record from a file using a key.
Say I've a file with the records like this
test1 this is test one
test2 this is test two
test456 this is test 456
Now is there a way where I can read the record directly by giving the key (which is test1 or test2...)
If i give test2 as my key I shoulod get "test2 this is test two"
testVariale = SampleTest.getValue(test2);
display testVariable should be giving "test2 this is test two"
Please let me know if there is a way. I greatly appreciate your help.
Thank you very much in advance.
Java Raider

Well, read lines from the file until the key matches the start of the line.
If the file is sorted, you can do a binary search.
I don't know if this has already been written, if that's what you're asking.

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Reading file like hashmap (datamap)

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