Java中的Unicode到字符串转换 [英] Unicode to string conversion in Java

问题描述

我正在建立一种语言，一种玩具语言。语法 \＃0061 应该将给定的Unicode转换为字符：

I am building a language, a toy language. The syntax \#0061 is supposed to convert the given Unicode to an character:

String temp = yytext().subtring(2);

然后尝试附加'\ u'到字符串，我注意到生成了一个错误。

Then after that try to append '\u' to the string, I noticed that generated an error.

我还试过\\+u+ temp; 这种方式不做任何转换。

I also tried to "\\" + "u" + temp; this way does not do any conversion.

我基本上只是通过向方法提供'0061'来将Unicode转换为字符，帮助。

I am basically trying to convert Unicode to a character by supplying only '0061' to a method, help.

推荐答案

剥去'＃'并使用 Integer.parseInt（0061，16）将十六进制数字转换为 int 。然后转换为 char 。

Strip the '#' and use Integer.parseInt("0061", 16) to convert the hex digits to an int. Then cast to a char.

（如果你手动实现了词法分析器，或者当你的词法分析器匹配unicode文字时，可以动态进行转换。但是在重读问题时，我看到你正在使用勒克斯发电机......好动！）

(If you had implemented the lexer by hand, an alternatively would be to do the conversion on the fly as your lexer matches the unicode literal. But on rereading the question, I see that you are using a lexer generator ... good move!)

这篇关于Java中的Unicode到字符串转换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！