sorting lines of an enormous file.txt in java

Question

I\'m working with a very big text file (755Mb). I need to sort the lines (about 1890000) and then write them back in another file.

I already noticed that discussion

Answer 1

Why don't you try multithreading and increasing heap size of the program you are running? (this also requires you to use merge sort kind of thing provided you have more memory than 755mb in your system.)