【笔记】遍历Map的方法

Set entrySet = mapA.entrySet();

int i=0;
for(Iterator iter = entrySet.iterator(); iter.next);
{
i++;
Map.Entry entry = iter.next();
System.out.println("the "+i+"th key is"entry.getKey());
System.out.println("the "+i+"th value is"entry.getValue());
}