import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class Util{
public static String dump(Map map)
{
if (map == null)
return "null";
StringBuffer buf = new StringBuffer().append('{');
Set keys = map.keySet();
Iterator iterator = keys.iterator();
Object key;
Object value;
boolean first = true;
while (iterator.hasNext())
{
if (first)
first = false;
else
buf.append(',');
key = iterator.next();
value = map.get(key);
buf.append( key + "->" + value );
}
buf.append('}');
return buf.toString();
}
}