The following article explains What is JSTL.
In fact, JSTL (JavaServer Pages Standard Tag Library) represents a is a set of JSP tags that provide common functionality for web applications. Further, JSTL is an extension of the JSP specification and provides a standardized set of tags for performing common tasks such as iteration, conditionals, and formatting.
Basically, JSTL tags are organized into several categories. The following list specifies the categories of JSTL tags.
- Core tags. These tags provide basic functionality for JSP pages, such as iteration, conditionals, and variable assignment.
- Formatting tags. These tags provide formatting capabilities for JSP pages, such as the date and number formatting.
- SQL tags. These tags provide database access capabilities for JSP pages, such as querying and updating databases.
- XML tags. These tags provide XML processing capabilities for JSP pages, such as parsing and transforming XML documents.
To summarize, JSTL tags help in the easy development of JSP websites and improve code modularity and maintainability. Moreover, JSTL tags can help to reduce the amount of Java code in a JSP page and make it easier to read and maintain. Also, JSTL is extensible. So, developers can create their own custom tags to extend the functionality of JSTL. Moreover, they can add application-specific functionality to JSP pages.
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