public class UsingStringBuffers
{

public static void main(String [] args)
  {
  
    // Creates a StringBuffer object
    // with the third
    // constructor mentioned above.
    
    StringBuffer buf =
      new StringBuffer("Java technologies");

    // The append method adds text at the
    // end of the buffer.
    // Prints result to screen.
    
    buf.append(" are used on desktops and
                            the Internet.");
    System.out.println(buf);
    
    // Prints buf capacity and its actual
    // length, using
    // the length and capacity methods.
    
    System.out.println("This string is " +
                              buf.length() + 
    " in length.");
    
    System.out.println(
      "But the actual capacity of this
              buffer is " + buf.capacity());
 
    }
}