如何编译编码为“UTF-8"的java源文件? [英] How to compile a java source file which is encoded as "UTF-8"?

问题描述

我保存了我的 Java 源文件，指定它的编码类型为 UTF-8(使用记事本，默认情况下记事本的编码类型是 ANSI)，然后我尝试使用以下方法编译它:

I saved my Java source file specifying it's encoding type as UTF-8 (using Notepad, by default Notepad's encoding type is ANSI) and then I tried to compile it using:

javac -encoding "UTF-8" One.java

但它给出了一个错误信息"

but it gave an error message"

One.java:1: illegal character: 65279

?public class One {

^
1 error

有没有其他办法，我可以编译这个?

Is there any other way, I can compile this?

这是来源:

public class One {
    public static void main( String[] args ){
        System.out.println("HI");
    }
} 

推荐答案

您的文件正在被读取为 UTF-8，否则永远不会出现值为65279"的字符.javac 期望您的源代码采用平台默认编码，根据 javac 文档:

Your file is being read as UTF-8, otherwise a character with value "65279" could never appear. javac expects your source code to be in the platform default encoding, according to the javac documentation:

如果未指定-encoding，则使用平台默认转换器.

If -encoding is not specified, the platform default converter is used.

十进制 65279 是十六进制 FEFF，即 Unicode 字节顺序标记 (BOM).在 UTF-8 中没有必要，因为 UTF-8 始终编码为八位字节流并且没有字节序问题.

Decimal 65279 is hex FEFF, which is the Unicode Byte Order Mark (BOM). It's unnecessary in UTF-8, because UTF-8 is always encoded as an octet stream and doesn't have endianness issues.

即使不需要，记事本也喜欢保留在 BOM 中，但有些程序不喜欢找到它们.正如其他人指出的那样，记事本不是一个很好的文本编辑器.切换到不同的文本编辑器几乎肯定会解决您的问题.

Notepad likes to stick in BOMs even when they're not necessary, but some programs don't like finding them. As others have pointed out, Notepad is not a very good text editor. Switching to a different text editor will almost certainly solve your problem.

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