package cylikon.YahooEnt; 

import java.io.Serializable; 

public class CategoryPK implements Serializable { 

public String cat_no; // our primary key, a reference to a category number in the database
                   // sites in the db with common content have common cat numbers

public CategoryPK() {}

public CategoryPK(String catNo) { cat_no=catNo; } 

// the three methods below come from EJBHome extending rmi.Remote / which in turn 
// is implemented by rmi.RemoteObject, so these three methods come from the 
// RemoteObject class
public boolean equals(Object obj) { 
   if (obj==null || !(obj instanceof CategoryPK)) { 
    return false; 				  } 
   else if (((CategoryPK)obj).cat_no==cat_no) { 
    return true;                             } 
   else { return false; } 
			          }

public int hashCode() { return Integer.valueOf(cat_no).intValue();  } 

public String toString() { return cat_no; } 
						 } //end Primary Key class