Question

所以，我使用BigInteger将一些二进制字符串转换为数字表示，最终陷入了一个奇怪的错误。

当这行代码运行时，它会引发NumberFormatException：

BigInteger temp = new BigInteger(strbuf.toString(), 2);

其中strbuf具有以下字符串（仅由零和1组成）：

"1001110000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010"

起初我觉得字符串或值太大了，但是下面的独立java类编译并运行得很好：

import java.math.BigInteger;

class test {
    public static void main(String[] argv) {
        StringBuffer strbuf = new StringBuffer("1001110000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010");
        BigInteger big = new BigInteger(strbuf.toString(), 2);
        System.out.println(big);
    }
}

我在这里遗失了什么吗？为什么具有明显相同值的相同代码无法在我的主应用程序上运行？

异常消息：

Exception in thread "main" java.lang.NumberFormatException: For input string: "1001110000000100"
    at java.lang.NumberFormatException.forInputString(Unknown Source)
    at java.lang.Integer.parseInt(Unknown Source)
    at java.math.BigInteger.<init>(Unknown Source)
    at org.app.star.pad(star.pad:42)

Answer 1

根据我对j2ee5的狩猎书，有一种尝试（隐含地建议）将值转换为 java.lang.Integer ，一个包装器 int类型。那就是问题所在。注意异常中的第二个“at”行放松...

这可能是一个优化问题..为您的主要优化关闭程序不是简化的演示程序。

此致

ArrowInTree

有效大二进制字符串上的BigInteger NumberFormatException

1 个答案: