Map<String, Object> cond=new HashMap<String, Object>();
cond.put("jCategory", "ddd");
cond.put("yid", "2");
String [] keys=new String[cond.size()];
int i=0;
for(Map.Entry<String, Object> entry:cond.entrySet())
{
String key=entry.getKey();
String value = entry.getValue().toString();
keys[i]=key;

System.out.println("kkk---"+key+"==="+value);
i++;
}