不同方式遍历Map集合（全）

 public static void main(String[] args){ Map<String,String> map=new HashMap<String,String>(); map.put("1","张三"); map.put("2","李四"); map.put("3","王五"); } 

for(String key:map.keySet()){ System.out.print("key="+key); System.out.println("value="+map.get(key)); }

Iterator<Map.Entry<String,String>> car =map.entrySet().interator(); while(car.hasNext()){ Map.Entry<String,String> entry=car.next(); System.out.println("key="+entry.getKey()+"and value="+entry.getValue());  }

for(Map.Entry<String,String> entry:map.entrySet()){ System.out.println("key="+entry.getKey()+"and value="+entry.getValue());}

for(String val:map.Values()){ System.out.println("value="+v);}