long -> int | long x = 10; int y = (int) x; Long -> Integer | Long x = (long) 10; Integer y = x.intValue(); int -> long | int x = 10 ; long y = (long) x; Integer -> Long | Integer x = 10; Long y = x.longValue();
转载于:https://www.cnblogs.com/PinkPink/p/10101033.html
