What will be the output of the following Java program?

import java.io.*;
class Chararrayinput 
{
    public static void main(String[] args) 
    {
  String obj  = "abcdef";
        int length = obj.length();
        char c[] = new char[length];
        obj.getChars(0, length, c, 0);
        CharArrayReader input1 = new CharArrayReader(c);
        CharArrayReader input2 = new CharArrayReader(c, 0, 3);
        int i;
        try 
        {
while ((i = input2.read()) != -1) 
            {
                System.out.print((char)i);
            }
        } 
        catch (IOException e) 
        {
      // TODO Auto-generated catch block
            e.printStackTrace();
  }
}
}