map

 

import java.util.*;
import java.util.Map.Entry;

public class MapTest {
 public static void main(String[] args) {
  Map<String, Integer> tempMap = new HashMap<String, Integer>();
  tempMap.put("abc", 1110);
  tempMap.put("efg", 2000);
  tempMap.put("tch", 1330);

  /*  Iterator iterator =tempMap.entrySet().iterator();
    while(iterator.hasNext()){
     Map.Entry entry = (Entry) iterator.next();
     Object key = entry.getKey();
     Object value = entry.getValue();
     System.out.println("key:"+"["+key+"]" +"=="+"value:"+"["+value+"]");
    }*/

  /* for(Map.Entry<String,Integer> entry:tempMap.entrySet()){
    String key = entry.getKey().toString();
    String value = entry.getValue().toString();
    System.out.println("key:"+"["+key+"]" +"=="+"value:"+"["+value+"]");
   }*/

  //遍历KEY
  /*for(Iterator iterator = tempMap.keySet().iterator();iterator.hasNext();){
   Object key = iterator.next();
   System.out.println(key);
  }*/

  /*
  for(Object o:tempMap.keySet()){
       System.out.println("key="+ o +"value="+tempMap.get(o));      
  }*/

  //MAP遍历ArrayList
  //   Map<String, ArrayList> map = HashMap<String,ArrayList>();
  //     Map<String, ArrayList> map = new HashMap<String, ArrayList>(); 
  //     Set<String> keys = map.keySet(); 
  //     Iterator<String> iterator = keys.iterator(); 
  //     while (iterator.hasNext()) { 
  //      String key = iterator.next(); 
  //      ArrayList arrayList = map.get(key); 
  //      for (Object o : arrayList) { 
  //       System.out.println(o + "遍历过程"); 
  //      } 
  //     } 
  //     System.out.println("2222"); 
  //    
  //    
  //     Map<String, List> mapList = new HashMap<String, List>(); 
  //     for (Map.Entry entry : mapList.entrySet()) { 
  //      String key = entry.getKey().toString(); 
  //      List<String> values = (List) entry.getValue(); 
  //      for (String value : values) { 
  //       System.out.println(key + " --> " + value); 
  //      } 
  //     } 
  //  
   //Map<String, ArrayList> map = new HashMap<String, ArrayList>();
  /* Set<String> keys = map.keySet();
   Iterator<String> iterator = keys.iterator();
   while(iterator.hasNext()){
    String key = iterator.next();
    ArrayList arrayList = map.get(key);
    for(Object object :arrayList){
      System.out.println(object + "遍历过程"); 
    }
   }*/
  /*for (int i = 0; i < 10; i++) {
   ArrayList<String> lists = new ArrayList<String>();
   for (int j = 0; j < 5; j++)
    lists.add(j + "");
   map.put(i + "", lists);
  }
  for (int i = 0; i < map.size(); i++) {
   ArrayList<String> lists = (ArrayList<String>) map.get(i + "");
   for (int j = 0; j < lists.size(); j++)
    System.out.println(lists.get(j)+"==");
  }*/
  
 

 }
}