import java.io.*;
import java.util.Iterator;
public class IterableReader implements Iterable<String>{

    private Reader reader;
    
    IterableReader(Reader r){
        reader = r;
    }
    
 
    public Iterator<String> iterator(){
        return new MyIterator( reader );
    }
    
    private class MyIterator implements Iterator<String>{
        
        private BufferedReader br;
        private String nextLineToBeReturned;
        
        private MyIterator(Reader r){
            br = new BufferedReader( r );
            readALine();
        }
        
        private void readALine(){
            try{
                nextLineToBeReturned = br.readLine();
            }catch(IOException uups){
                nextLineToBeReturned = null;
            }
        }


        public boolean hasNext(){
            return nextLineToBeReturned != null;
        }
        
        public String next(){
            String ret = nextLineToBeReturned;
            readALine();
            return ret;
        }
        
        public void remove(){ 
            throw new UnsupportedOperationException(); 
        }
    }
}