superscript in Java String

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Does Java String supports superscript in a String? If yes then how can I use it, I have searched the web and also the API but not able to figure out how I can use it for my

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无人及你

2020-12-09 19:27

No, a string is just a sequence of UTF-16 code-units. There are unicode codepoints for individual super-script characters in the math code-pages but none that mark a region of a string as super-scripted the way there are for bidi regions.

If you're trying to display mathematical text with super-scripts using a Graphics context, you should search for Latek or MathML libraries written in Java.

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执念已碎

2020-12-09 19:31

This can be done in java strings and some other cases also using Unicode Character super script...look at this link.

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抹茶落季

2020-12-09 19:33

Just in case somebody uses theese hand made functions:

public static String superscript(String str) {
    str = str.replaceAll("0", "⁰");
    str = str.replaceAll("1", "¹");
    str = str.replaceAll("2", "²");
    str = str.replaceAll("3", "³");
    str = str.replaceAll("4", "⁴");
    str = str.replaceAll("5", "⁵");
    str = str.replaceAll("6", "⁶");
    str = str.replaceAll("7", "⁷");
    str = str.replaceAll("8", "⁸");
    str = str.replaceAll("9", "⁹");         
    return str;
}

public static String subscript(String str) {
    str = str.replaceAll("0", "₀");
    str = str.replaceAll("1", "₁");
    str = str.replaceAll("2", "₂");
    str = str.replaceAll("3", "₃");
    str = str.replaceAll("4", "₄");
    str = str.replaceAll("5", "₅");
    str = str.replaceAll("6", "₆");
    str = str.replaceAll("7", "₇");
    str = str.replaceAll("8", "₈");
    str = str.replaceAll("9", "₉");
    return str;
}

Note, that there is a little ambiguity about ¹²³, because they are acii symobls 251, 253 and 252 and they are also utf-symbols. I prefer to use acsii because they more probably are supproted by font, but here you should decide what you actually want to use.

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闹比i

2020-12-09 19:39

A String does not store formatting information. To use superscript, you will have to fiddle with the Font of the displaying component. Checkout the API on Font.

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庸人自扰

2020-12-09 19:39
You can use html tags in java (User Interface only): Suppose you want to display 2¹⁰, write this code in your JLabel :
```
JLabel lab = JLabel("2<html><sup>10</sup></html>");
```
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不要未来只要你来

2020-12-09 19:40

Check out java.text.AttributedString, which supports subscripts and more. e.g., in your paintComponent() you could go:

   public void paintComponent(Graphics g) {
      super.paintComponent(g);
      AttributedString as = new AttributedString("I love you 104 gazillion");
      as.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 13, 14);
      as.addAttribute(TextAttribute.FOREGROUND, Color.RED, 2, 6);
      g.drawString(as.getIterator(), 20, 20);
   }

Should look like this

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