我有一个文件夹中所有文件名的列表，以及一个由开发人员手动“检查”的文件的列表。我将如何比较这两个数组，以便仅打印出主列表中未包含的那些数组。
public static void main(String[] args) throws java.lang.Exception {
String[] list = {"my_purchases", "my_reservation_history", "my_reservations", "my_sales", "my_wallet", "notifications", "order_confirmation", "payment", "payment_methods", "pricing", "privacy", "privacy_policy", "profile_menu", "ratings", "register", "reviews", "search_listings", "search_listings_forms", "submit_listing", "submit_listing_forms", "terms_of_service", "transaction_history", "trust_verification", "unsubscribe", "user", "verify_email", "verify_shipping", "404", "account_menu", "auth", "base", "dashboard_base", "dashboard_menu", "fiveohthree", "footer", "header", "header_menu", "listings_menu", "main_searchbar", "primary_navbar"};
String[] checked = {"404", "account_menu", "auth", "base", "dashboard_base", "dashboard_menu", "fiveohthree", "footer", "header", "header_menu", "listings_menu"};
ArrayList<String> ar = new ArrayList<String>();
for(int i = 0; i < checked.length; i++)
{
if(!Arrays.asList(list).contains(checked[i]))
ar.add(checked[i]);
}
}
将循环更改为：
ArrayList<String> ar = new ArrayList<String>();
for(int i = 0; i < checked.length; i++) {
if(!Arrays.asList(list).contains(checked[i]))
ar.add(checked[i]);
}
ArrayList ar应该在for循环之外。否则，ar每次在中checked存在array元素时都将创建一个list。
编辑：
if(!Arrays.asList(list).contains(checked))
使用此语句，您正在检查checked引用是否不是的元素list。应该checked[i]检查的元素是否checked存在list。
如果要打印list其中不包含的元素checked。然后使用：
for(int i = 0; i < list.length; i++) {
if(!Arrays.asList(checked).contains(list[i]))
ar.add(list[i]);
}
System.out.println(ar);
本文收集自互联网，转载请注明来源。
如有侵权，请联系 [email protected] 删除。
我来说两句