迭代输出Map键值对的几种方法
Map<String,String> mymap = new HashMap<String,String>();
mymap.put("x1", "y1"); mymap.put("x2", "y2"); mymap.put("x3", "y3");
Iterator it = mymap.entrySet().iterator();
while(it.hasNext()){Map.Entry entry = (Map.Entry) it.next();
System.out.println(entry.getKey()+":"+entry.getValue());
}
for(Map.Entry entry:mymap.entrySet()){
System.out.println(entry.getKey()+"="+entry.getValue());
}
for(String str:mymap.keySet()){
System.out.println(str+"|"+mymap.get(str));
}
