Java异常无效INT长整型 [英] Java exception invalid int for long integer
问题描述
我目前正在开发一个数学的应用,使长计算。每当我键入一个整数,其中超过9位数...的错误(其中...被替换为一个很长的数字):我收到java.lang.NumberFormatException:无效INT。当我输入一个整数,它是小于或等于9位,应用程序运行正常。我需要的输出为一个int(即没有小数位)。不明白为什么错误的发生。
的code这是造成问题的位是:
意向意图= getIntent();
字符串消息= intent.getStringExtra(MainActivity.NUMBER);
INT INP =的Integer.parseInt(消息);
对于最大值 INT
2 31 -1,即2,147,483,647。如果你试图解析比数字越大,会抛出异常。
如果您需要处理更大的数字,可以使用长
对于一般较大范围(高达2 63 -1)或的BigInteger
为任意大小。
I'm currently developing a math application that makes long computations. I'm getting java.lang.NumberFormatException: Invalid int: "..." error (where the ... is replaced by a very long number) whenever I type an integer that contains more than 9 digits. When I type in an integer that is less than or equal to 9 digits, the application runs fine. I need the output to be an int (i.e. no decimal places). Not quite sure why the error's occurring.
The bit of code that's causing the problem is:
Intent intent = getIntent();
String message = intent.getStringExtra(MainActivity.NUMBER);
int inp = Integer.parseInt(message);
The maximum value for an int
is 231-1, i.e. 2,147,483,647. If you try to parse a larger number than that, the exception will be thrown.
If you need to handle larger numbers, either use long
for a generally larger range (up to 263-1) or BigInteger
for an arbitrary size.
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