Inbuilt merge sort

[Vani Sweety]

hello
i wanted to know if there is already an inbuilt function that can merge sort a very big file in java(at around 120 MB)
we just have to open the txt file in a function merge sort???
for example to sort a "unsorted.txt" like that:

Bacteria
Azorhizobium
Azorhizobium caulinodans
Buchnera aphidicola
Cellvibrio
Cellulomonas gilvus
Dictyoglomus
Dictyoglomus thermophilum
Methylophilus
Methylophilus methylotrophus
Pelobacter
Pelobacter carbinolicus
Phenylobacterium
Phenylobacterium immobile
Shewanella
Shewanella colwelliana
Shewanella putrefaciens
Shewanella hanedai
halophilic eubacterium NRCC 41227
halophilic eubacterium
Myxococcales
Myxococcaceae
Myxococcus
Myxococcus fulvus
Myxococcus xanthus
Corallococcus macrosporus
Angiococcus disciformis
Cystobacteraceae
etc........

[Les Morgan]

I do not know of a merge sort implemented in Java. Since your file is unsorted, you will have to read it into memory to sort. Why not just read it into any database product and do an "order by" on it?

[Fred Kleinschmidt]

On Unix or Linux platforms, you would just execute the

 sort 

command; no need to write a Java program to do it.

[Campbell Ritchie]

That is one way to do it. But if you read the file into a List, you can use this to sort it. That uses an optimisation of merge sort.