HashMap和Hashtable的遍历
import java.util.HashMap;import java.util.Iterator;import java.util.Map;public class Test01 {public static void main(String args[]){Map map=new HashMap();map.put("abin", "is o boy");map.put("xia", "is o girl");for(Iterator it=map.entrySet().iterator();it.hasNext();){Map.Entry entry=(Map.Entry)it.next();System.out.println("entry.getkey()="+entry.getKey());System.out.println("entry.getValue()="+entry.getValue());}}import java.util.Enumeration;import java.util.Hashtable;public class test02 {public static void main(String args[]){Hashtable<String,String> ht=new Hashtable<String,String>();ht.put("a", "aaa");ht.put("b", "bbb");Enumeration er=ht.keys();while(er.hasMoreElements()){String key=(String)er.nextElement();System.out.println("key="+key+" value="+ht.get(key));}}}