JSTL - JSP Standard Tag Library Standard Tag Library
JSP can be written in HTML code in Java, and the use of JSTL tags can be used in place of the language of Java language, the JSP is more like HTML, more user-friendly front-end for the staff, in favor of the division of program development.
Library used tags: core core tag library, in place of the core of the Java code; FMT format and for outputting text, date, time, number.
EL expression - Expression Lanuage
EL even more concise, the main functions and simplifies the conditions to take the reference value of judgment statement.