Java读取Unsigned Int的程序

最新推荐文章于 2024-07-06 23:00:00 发布

最新推荐文章于 2024-07-06 23:00:00 发布 · 1.1k 阅读

文章标签：

#Java

Java 专栏收录该内容

4 篇文章

订阅专栏

本文介绍如何将unsigned int类型的数据（范围0-4294967295）通过Java代码转换为long型。具体实现方法是通过位操作将四个字节的数据组合起来。

unsigned int的范围为0-4294967295

所以int不再适用，我们这里使用long型

程序如下

    public static long readUnsignedInt(byte[] bytes) {
        long b0 = ((long) (bytes[0] & 0xff));
        long b1 = ((long) (bytes[1] & 0xff)) << 8;
        long b2 = ((long) (bytes[2] & 0xff)) << 16;
        long b3 = ((long) (bytes[3] & 0xff)) << 24;
        return (long) (b0 | b1 | b2 | b3);
    }