我有一个打印如下的HashSet:
[Category:Porch of the Cathedral of Palermo, Category:Side views of the Cathedral of Palermo, Category:Church towers of the Cathedral of Palermo, Category:Saint Rosalia by Vincenzo Vitaliano, Category:Piazza del Duomo (Palermo)]
我需要删除"类别:"关闭集合中每个元素的字符,以产生输出:
[Porch of the Cathedral of Palermo, Side views of the Cathedral of Palermo, Church towers of the Cathedral of Palermo, Saint Rosalia by Vincenzo Vitaliano, Piazza del Duomo (Palermo)]
最简单的方法是什么(在Java中)?我目前正在使用HashSet(需要它来确保元素是唯一的)但我可以将它转换为ArrayList或任何最适合此任务的东西。
答案 0 :(得分:1)
最简单的方法是:用空字符串替换"Category:"
。您已拨打toString()
的{{1}}。
HashSet
输出:
System.out.println(set.toString().replace("Category:", ""));