Trying to Write Multiple Files at Once - Java -

i trying split dictionary file have multiple dictionaries of different lengths, example if want take , put smaller dictionaries of length 2, 3, 4, ..... n, can search them quicker. when quicker mean know input length , therefore accessing corresponding length dictionary (a fraction of whole) mean quicker accesses. current implementation generates files doesn't write them desire. ideally, words of length 2 example written length2 text file. have suggestions?

import java.io.bufferedreader; import java.io.filenotfoundexception; import java.io.filereader; import java.io.printwriter; import java.io.ioexception;  public class main {  public static void main(string[] args) throws ioexception {     filereader fr = new filereader("dictionary.txt");     printwriter l2 = new printwriter("dictionary_length2.txt", "utf-8");     printwriter l3 = new printwriter("dictionary_length3.txt", "utf-8");     printwriter l4 = new printwriter("dictionary_length4.txt", "utf-8");     printwriter l5 = new printwriter("dictionary_length5.txt", "utf-8");     printwriter l6 = new printwriter("dictionary_length6.txt", "utf-8");     printwriter l7 = new printwriter("dictionary_length7.txt", "utf-8");     printwriter l8 = new printwriter("dictionary_length8.txt", "utf-8");     printwriter l9 = new printwriter("dictionary_length9.txt", "utf-8");     printwriter l10 = new printwriter("dictionary_length10.txt", "utf-8");     printwriter l11 = new printwriter("dictionary_lengty11.txt", "utf-8");     printwriter l12 = new printwriter("dictionary_length12.txt", "utf-8");     printwriter l13 = new printwriter("dictionary_length13.txt", "utf-8");     printwriter l14 = new printwriter("dictionary_length14.txt", "utf-8");     printwriter l15 = new printwriter("dictionary_length15.txt", "utf-8");     printwriter l16 = new printwriter("dictionary_length16.txt", "utf-8");     printwriter l17 = new printwriter("dictionary_length17.txt", "utf-8");     printwriter l18 = new printwriter("dictionary_length18.txt", "utf-8");     printwriter l19 = new printwriter("dictionary_length19.txt", "utf-8");     printwriter l20 = new printwriter("dictionary_length20.txt", "utf-8");     printwriter l21 = new printwriter("dictionary_length21.txt", "utf-8");      bufferedreader tr = new bufferedreader(fr);     string temp;     int temp_length;      for(int = 0; < 60388; i++){         temp = new string(tr.readline());         temp_length = temp.length();         if(temp_length == 2)             l2.println(temp);         if(temp_length == 3)             l3.println(temp);         if(temp_length == 4)             l4.println(temp);         if(temp_length == 5)             l5.println(temp);         if(temp_length == 6)             l6.println(temp);         if(temp_length == 7)             l7.println(temp);         if(temp_length == 8)             l8.println(temp);         if(temp_length == 9)             l9.println(temp);         if(temp_length == 10)             l10.println(temp);         if(temp_length == 11)             l11.println(temp);         if(temp_length == 12)             l12.println(temp);         if(temp_length == 13)             l13.println(temp);         if(temp_length == 14)             l14.println(temp);         if(temp_length == 15)             l15.println(temp);         if(temp_length == 16)             l16.println(temp);         if(temp_length == 17)             l17.println(temp);         if(temp_length == 18)             l18.println(temp);         if(temp_length == 19)             l19.println(temp);         if(temp_length == 20)             l20.println(temp);         if(temp_length == 21)             l21.println(temp);     }      tr.close();     l2.close();     l3.close();     l4.close();     l5.close();     l6.close();     l7.close();     l8.close();     l9.close();     l10.close();     l11.close();     l12.close();     l13.close();     l14.close();     l15.close();     l16.close();     l17.close();     l18.close();     l19.close();     l20.close();     l21.close();     system.out.println("complete."); } } 

tangental "answer" follows. (this should print out contents files, unless i'm missing basic.)

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whenever there set of variables in form xn (e.g. l2, l3, l22), should usually replaced list collection type such arraylist.

this example show how can reduce duplication , fixed bounds:

int max_word_len = 22; // making dynamic left excercise list<printwriter> writers = new arraylist<printwriter>();  (int = 0; <= max_word_len; i++) {     printwriter w = new printwriter("dictionary_length" + + ".txt", "utf-8");     writers.add(w); }  string line; while ((line = tr.readline()) != null) {    int len = line.length();    if (len < writers.size()) {        writers.get(len).println(line);    } }  (printwriter w : writers) {     w.close(); } 

slight adjustments can made not create "0" or "1" file.