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Based on the JSTL functions, they are categorized into five types.

  1. Core Tags – Core tags provide support for iteration, conditional logic, catch exception, url, forward or redirect response etc.
  2. Formatting and Localization Tags – These tags are provided for formatting of Numbers, Dates and i18n support through locales and resource bundles.
  3. SQL Tags – JSTL SQL Tags provide support for interaction with relational databases such as Oracle, MySql etc.
  4. XML Tags – XML tags are used to work with XML documents such as parsing XML, transforming XML data and XPath expressions evaluation.
  5. JSTL Functions Tags – JSTL tags provide a number of functions that we can use to perform common operation, most of them are for String manipulation such as String Concatenation, Split String etc.
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Java Interview Questions and Answers 2018