Java Integer.parseInt无法解析字符串 [英] Java Integer.parseInt failed to parse a string

问题描述

我正在解析一个由15位数字组成的字符串，如下所示:

I'm parsing a string of 15 digits like this:

String str = "100004159312045";
int i = Integer.parseInt(str);

这样做时出现异常. 为什么? Integer.parseInt的局限性是什么?将这么长的字符串转换为数字，我还有什么其他选择?

I'm getting an exception when doing so. Why? What are the limitations for Integer.parseInt? What other options do I have for converting such long string to a number?

推荐答案

您的电话号码太大，无法放入32位的int，范围只有-2,147,483,648到2,147,483,647.

Your number is too large to fit in an int which is 32 bits and only has a range of -2,147,483,648 to 2,147,483,647.

尝试 Long.parseLong 代替. long具有64位，范围为-9,223,372,036,854,775,808至9,223,372,036,854,775,807.

Try Long.parseLong instead. A long has 64 bits and has a range of -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.

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