如何将字节数组中的数据打印为字符 [英] how to print the data in byte array as characters

问题描述

在我的字节数组中，我有一个消息的哈希值，它由一些负值和正值组成。使用（char）byte [i] 语句可以轻松打印正值。现在我怎样才能得到负值

In my byte array i have the hash values of a message which consists of some negative values and also positive values. Positive values are being printed easily by using the (char)byte[i] statement. Now how can i get the negative value

推荐答案

如果你喜欢用十进制打印它，你可以把它变成正面通过屏蔽：

Well if you're happy printing it in decimal, you could just make it positive by masking:

int positive = bytes[i] & 0xff;

如果你打印出一个哈希值，那么使用十六进制会更常规。 Stack Overflow上还有很多其他问题，用于将二进制数据转换为Java中的十六进制字符串。

If you're printing out a hash though, it would be more conventional to use hex. There are plenty of other questions on Stack Overflow addressing converting binary data to a hex string in Java.

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