HashMap 中放 HashMap的相关取值
// 通过map3求出map1中的key和value
public class TestMap8 {
?public static void main(String arg[]) {
??????? Set hs=new HashSet();
??????? Set hs2=new HashSet();
???? ?
??????? Map? map1 = new HashMap();
??????? map1.put("a", 1);
??????? map1.put("b", 2);
???????
??????? Map? map2 = new HashMap();
??????? map2.put("c", map1);
??????? map2.put("d", map1);
???????
??????? Map? map3 = new HashMap();
??????? map3.put("e", map2);
??????? map3.put("f", map2);
???????
??????? Iterator ite=map3.entrySet().iterator();
??????? while(ite.hasNext()){
???? ??? Entry entry=(Entry)ite.next();
???? ??? hs.add(entry.getValue());
??????? }
???????
????????? Iterator ite2= hs.iterator();
????????? while(ite2.hasNext()){
???????? ? HashMap ms=(HashMap)ite2.next();
???????? ?
???????? ? Iterator ite3=ms.entrySet().iterator();
???????? ? while(ite3.hasNext()){
??????????? Entry Entry2=(Entry)ite3.next();
??????????? hs2.add(Entry2.getValue());
???????????? }
????????? }
?????????
????????? Iterator ite5=hs2.iterator();
????????? while(ite5.hasNext()){
???????? ? HashMap hh=(HashMap)ite5.next();
???????? ? Iterator ite6=hh.entrySet().iterator();
???????????????? while(ite6.hasNext()){
??????????????? ? Entry entry=(Entry)ite6.next();
??????????????? ? System.out.print(entry.getKey()+" / ");
??????????????? ? System.out.println(entry.getValue());
???????????????? }
????????? }
???????
???? }
?}
