Java用for循环Map详细解析

for(String dataKey : paraMap.keySet())   {   
    System.out.println(dataKey );              
}

Map<Integer,String> map = new LinkedHashMap<Integer,String>();
map.put(1, "星期一");
map.put(2, "星期二");
map.put(3, "星期三");
map.put(4, "星期四");
map.put(5, "星期五");
map.put(6, "星期六");
map.put(7, "星期日");

for(Map.Entry<Integer, String> entry: map.entrySet()) {
 System.out.print(entry.getKey() + ":" + entry.getValue() + "\t");
}