字符串到字符数组Java [英] String to char array Java

问题描述

我被这个难住了，我需要一些新鲜的眼光，我不知道为什么这段代码会这样做.

I am stumped on this and I need some fresh eyes, I'm not sure why this code is doing this.

String string = new String(new char[] {(char) 0x01, (char) 0x02, ... ,(char) 0xFC});

输出是它应该得到的一切，直到最后一个数字(0xFC)返回-4，我知道它是一个十六进制值，但如果我对十进制值 252 做同样的事情，它也会给我一个负数.我希望这只是一个简单的解决方案，我只是看不到.

The output is everything it should be up until the last number (the 0xFC) it returns a -4, I know its a hex value, but if I do the same with 252 the decimal value, it gives me a negative as well. I hope this is just a simple solution, and I just can't see it.

提前致谢.

推荐答案

一个字符串转char数组就这么简单

A string to char array is as simple as

String str = "someString"; 
char[] charArray = str.toCharArray();

你能解释一下你想要做什么吗?

Can you explain a little more on what you are trying to do?

* 更新 *

如果我理解您的新评论，您可以使用字节数组并提供示例.

if I am understanding your new comment, you can use a byte array and example is provided.

byte[] bytes = ByteBuffer.allocate(4).putInt(1695609641).array();

for (byte b : bytes) {
   System.out.format("0x%x ", b);
}

具有以下输出

0x65 0x10 0xf3 0x29

0x65 0x10 0xf3 0x29

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