从其编号创建Unicode字符 [英] Creating Unicode character from its number

问题描述

我想在Java中显示Unicode字符。如果我这样做，它的工作很好：

字符串符号=\\\∂;

符号等于∂。这是我想要的。

问题是，我知道Unicode号码，需要从中创建Unicode符号。我尝试（对我）显而易见的事情：

  int c = 2202; 
 String symbol =\\u+ c; 
  

但是，在这种情况下，符号等于\\\∂。这不是我想要的。

如果我知道它的Unicode编号（但只在运行时---我不能硬编码 c> c>

到 char 。您可以使用 Character.toString（）将它转换为 String ：

  String s = Character.toString（（char）c）; 
  

编辑：

Java源代码中的转义序列（ \u 位）是十六进制的，因此如果你想重现一个转义序列，你需要像 int c = 0x2202 。

I want to display a Unicode character in Java. If I do this, it works just fine:

String symbol = "\u2202";

symbol is equal to "∂". That's what I want.

The problem is that I know the Unicode number and need to create the Unicode symbol from that. I tried (to me) the obvious thing:

int c = 2202;
String symbol =  "\\u" + c;

However, in this case, symbol is equal to "\u2202". That's not what I want.

How can I construct the symbol if I know its Unicode number (but only at run-time---I can't hard-code it in like the first example)?

解决方案

Just cast your int to a char. You can convert that to a String using Character.toString():

String s = Character.toString((char)c);

EDIT:

Just remember that the escape sequences in Java source code (the \u bits) are in HEX, so if you're trying to reproduce an escape sequence, you'll need something like int c = 0x2202.

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