Iterator i=map.entrySet().iterator();
while(i.hasNext()){//只遍历一次,速度快
Map.Entry entry=(Map.Entry)i.next();
System.out.println(entry.getKey()+"="+entry.getValue());
}
while(i.hasNext()){//只遍历一次,速度快
Map.Entry entry=(Map.Entry)i.next();
System.out.println(entry.getKey()+"="+entry.getValue());
}