// This is the APPC. Compile this separately
package ShowAccessAPPC; 
public class Component {
public abstract class DataToAccess {
  public abstract Object get_host(); 
  public abstract Object inner_readOp();
  public Object readOp() {
    System.out.println("Read access on "+get_host()); 
    return inner_readOp(); 
  }
}
}