java.lang.NumberFormatException：对于输入字符串：“1538956627792”

Question

I'm trying to convert the system time to int with the following code:

String today = "" + System.currentTimeMillis();
int todayInt = Integer.parseInt(today);

But I'm getting the following error:

java.lang.NumberFormatException: For input string: "1538956627792"

Why is this number: "1538956627792" still throwing an error?

Answer 1

数字太长，无法解析为int ，您需要使用Long来解析那个大数字，

long todayInt = Long.parseLong(today);

Answer 2

The size of int type is 32 bit, it ranges from -2,147,483,648 to 2,147,483,647 . 1538956627792 exceeds the range, so the error caused.

you could change int to long to solve this problem, here is a detailed reference