I NEED BIG TIME HELP

When you are given a text file, parse,tokenize, and further split the tokens into specified sized letter groups Example: nput: "Second Programming Assignment Tokens: "second" "programming" "assignment" Letter Groups (2) : "se"-ec" "co" "on" "nd" "pr" "ro" "og" "gr" "ra" "am" "mm" "m" "in"-ng" 'as" "ss""ig" "gn" "nm" "me" "en" "nt" Letter Groups (3): "sec" "eco "con" "ond" "pro" "rog" "ogr" gra" "ram" "amm" "mmi" "min" "ing" "ass" "ssi "sig "ign" "gnm" "nme" "men" "ent" After generating the letter groups, generate the histogram (frequency of occurrence) of the letter groups. The name of the text file will be the first argument of your main function and letterGroupLen will be the second argument of your main function. Parse the input text file You will have 2 classes in your design. SentenceUtils and Histogram. . SentenceUtils class will tokenize and partition the tokens into letter groups Histogram class using a HashMap data structure will count the number of occurrence of each letter group, and print the results when requested