Java Dictionary-Sort,Extract

import java.io.*;
class alphabetical
{
 public static void main(String args[])
  {
  try{
  // Open the file that is the first
  // command line parameter
  FileInputStream fstream = new
FileInputStream("C:\\Users\\
HP\\Desktop\\test\\test.txt");
  // Get the object of DataInputStream
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  //Read File Line By Line
  String strLine2="z";
  String stralph="";
  String [] str=new String[100];

  String [] arr=new String[100];
  int len=0;
  int i=0;
  int k=0;
  char l2[]=new char[10];
  char l1[]=new char[10];
  while ((strLine = br.readLine()) != null)   {
  // Print the content on the console
     // s.getChars(start, end, buf, 0);
    str[i] =strLine;
    i=i+1;
    }
  int j=0;
  for(j=0;j<str.length;j++)
  {

  for(i=j;i<str.length;i++)
  {
      if(str[i]!=null && str[j]!=null)
      {
    if ((int)str[j].toLowerCase().charAt(0)
>(int)str[i].toLowerCase().charAt(0))
    {
        stralph=str[j];
        str[j]=str[i];
        str[i]=stralph;
    }
    else  if ((int)str[j].toLowerCase().charAt(0)
==(int)str[i].toLowerCase().charAt(0))
    {
        if(str[j].length()>=str[i].length())
        {
            len=str[i].length();

        }
        else
        {
            len=str[j].length();
        }
        for(k=1;k<len-1;k++){
         if ((int)str[j].toLowerCase().charAt(k)
>(int)str[i].toLowerCase().charAt(k))
         {
        stralph=str[j];
        str[j]=str[i];
        str[i]=stralph;
        break;
         }

    }

    }

  }
  }
  }

   for(i=0;i<str.length;i++)
  {
      if (str[i]!=null)
      {
         System.out.println(str[i]);
        }

    else  {
        break;
         }

  }
  //Close the input stream
  in.close();
    }catch (Exception e){//Catch exception if any
  System.err.println("Error:" + e.getMessage());
  }
  }
}