Java: Convert String "\uFFFF" into char

开发者_如何学编程Is there a standard method to convert a string like "\uFFFF" into character meaning that the string of six character contains a presentation of one unicode character?

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char c = "\uFFFF".toCharArray()[0];

The value is directly interpreted as the desired string, and the whole sequence is realized as a single character.

Another way, if you are going to hard-code the value:

char c = '\uFFFF';

Note that \uFFFF doesn't seem to be a proper unicode character, but try with \u041f for example.

Read about unicode escapes here

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The backslash is escaped here (so you see two of them but the s String is really only 6 characters long). If you're sure that you have exactly "\u" at the beginning of your string, simply skip them and converter the hexadecimal value:

String s = "\\u20ac";

char c = (char) Integer.parseInt( s.substring(2), 16 );

After that c shall contain the euro symbol as expected.

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If you are parsing input with Java style escaped characters you might want to have a look at StringEscapeUtils.unescapeJava. It handles Unicode escapes as well as newlines, tabs etc.

String s = StringEscapeUtils.unescapeJava("\\u20ac\\n"); // s contains the euro symbol followed by newline

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String charInUnicode = "\\u0041"; // ascii code 65, the letter 'A'
Integer code = Integer.parseInt(charInUnicode.substring(2), 16); // the integer 65 in base 10
char ch = Character.toChars(code)[0]; // the letter 'A'

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Try this in BlueJ --> char c ='\uffff'; System.out.println(c); Hi, I loved the way everyone understood it but after I tried it in BlueJ, it shows a blank screen...

But after you copy the only (invisible) character and paste it on the google search bar, it becomes clear that it responds well but the output screen was unable to display it...

The specific outcome was this character --> ￿

Have a nice day experimenting!