##Project Javatry## ###Main Function### Read file and found frequency of used words.The most important target is to make sure performance and avoid big memory usage.
###Program logics and hints###
1.Import required package to be able to use features
2.Read file line by line except read whole file to buffer to make sure performace
3.Use object map to collect words and their frequency
4.Printout final result while loop map's content