// Filename SafeReader.java
//
// Written for JFL book Chapter 8 see text.
// Fintan Culwin, v0.1, January 1997
// modified by X. Meng to include synchronized reader
// mar-25-1998

import Synch;

public class SafeReader extends Thread { 

Synch  readThis;

   public SafeReader( Synch toRead ) { 
       readThis = toRead; 
   } // End RoomFiller Constructor;


   public void run() {
   
   int firstAttribute;
   int secondAttribute;
   
       while ( true ) { 
		   synchronized (readThis) {
               firstAttribute  = readThis.getAnAttribute(); 
               secondAttribute = readThis.getAnotherAttribute();
		   }
		   if ( firstAttribute != secondAttribute) { 
              System.out.println( "Danger proved ... " + 
                         firstAttribute  + " and "     + 
                         secondAttribute + ".");
          } // End if
      } // End while.   
   } // End run.

} // End SafeReader.