java - I don't understand the program -

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i wanted program list contents available in directory. found nice code in java2's.com, http://www.java2s.com/code/java/file-input-output/listingthedirectorycontents.htm

and here code,

import java.io.file; import java.util.arrays;  public class dir {    static int indentlevel = -1;    static void listpath(file path) {     file files[];      indentlevel++;       files = path.listfiles();      arrays.sort(files);     (int = 0, n = files.length; < n; i++) {       (int indent = 0; indent < indentlevel; indent++) {         system.out.print("  ");       }       system.out.println(files[i].tostring());       if (files[i].isdirectory()) {         listpath(files[i]);       }     }     indentlevel--;    }    public static void main(string args[]) {     listpath(new file(".\\code"));   } }

what don't understand variable n in first for loop. if not defined anywhere, why program not showing error? 

 int i, n;

would declare 2 ints.

in code 

  int = 0, n = files.length;

declares , initialises them.


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