Decimal format	https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/text/DecimalFormat.html
Date format	https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/text/SimpleDateFormat.html
Charset	https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/charset/Charset.html
URI	https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/net/URI.html
URL	https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/net/URL.html
Full list of Math functions	https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Math.html
Learning the Java Language	https://docs.oracle.com/javase/tutorial/java/index.html
Java Development Kit (JDK) APIs	https://docs.oracle.com/en/java/javase/21/docs/api/index.html
JavaFX CSS Reference Guide	https://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html
Derby Reference Manual	https://db.apache.org/derby/docs/10.17/ref/index.html
SQL identifier	https://db.apache.org/derby/docs/10.17/ref/crefsqlj18919.html
Html tutorial - Chinese	https://developer.mozilla.org/zh-CN/docs/Learn/HTML
Html tutorial - English	https://developer.mozilla.org/en-US/docs/Learn/HTML
JavaScript tutorial - Chinese	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript
JavaScript tutorial - English	https://developer.mozilla.org/en-US/docs/Web/JavaScript
JavaScript language specification	https://www.ecma-international.org/publications-and-standards/standards/ecma-262/
Nashorn User's Guide	https://docs.oracle.com/javase/10/nashorn/toc.htm
CSS tutorial - Chinese	https://developer.mozilla.org/zh-CN/docs/web/css/reference
CSS tutorial - English	https://developer.mozilla.org/en-US/docs/web/css/reference
CSS reference	https://www.w3.org/TR/CSS/#css
RenderingHints	https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/RenderingHints.html
JSON Tutorial - Chinese	https://developer.mozilla.org/zh-CN/docs/Learn/JavaScript/Objects/JSON
JSON Tutorial - English	https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/JSON
JSON Specification	https://www.ecma-international.org/publications-and-standards/standards/ecma-404/
XML Tutorial - Chinese	https://developer.mozilla.org/zh-CN/docs/Web/XML/XML_introduction
XML Tutorial - English	https://developer.mozilla.org/en-US/docs/Web/XML/XML_introduction
DOM Specification	https://www.w3.org/TR/DOM-Level-3-Core/
SVG Tutorial - Chinese	https://developer.mozilla.org/zh-CN/docs/Web/SVG/Tutorial
SVG Tutorial - English	https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial
SVG Specification	https://www.w3.org/Graphics/SVG/
SVGPath in JavaFX	https://openjfx.io/javadoc/21/javafx.graphics/javafx/scene/shape/SVGPath.html
Shape 2D in JavaFX	https://openjfx.io/javadoc/21/javafx.graphics/javafx/scene/shape/Shape.html
Shape 2D in Java	https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/Shape.html