Buffered Reader demo -- Java

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;

public class BufferedReaderDemo {
   public static void main(String[] args) throws Exception {
      
      InputStream is = null; 
      InputStreamReader isr = null;
      BufferedReader br = null;

      try{
         // open input stream test.txt for reading purpose.
         is = new FileInputStream("c:/test.txt");
         
         // create new input stream reader
         isr = new InputStreamReader(is);
         
         // create new buffered reader
         br = new BufferedReader(isr);
      
         // creates buffer
         char[] cbuf = new char[is.available()];
         
         // reads characters to buffer, offset 2, len 10
         br.read(cbuf, 2, 10);
         
         // for each character in the buffer
         for (char c:cbuf)
         {
            // if char is empty
            if(c == (char)0)
            {
               c='*';
            }
            // prints characters
            System.out.print(c);
         }
                  
      }catch(Exception e){
         e.printStackTrace();
      }finally{
         
         // releases resources associated with the streams
         if(is!=null)
            is.close();
         if(isr!=null)
            isr.close();
         if(br!=null)
            br.close();
      }
   }
}

Assuming we have a text file c:/test.txt, which has the following content. This file will be used as an input for our example program:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Let us compile and run the above program, this will produce the following result:

**ABCDEFGHIJ**************