<c: out> For Simple Calculation and Output
One of the general purpose core library tag is <c: out>. The main function of the this tag is to display the output to the user. It works like expression tag in jsp <%= ---%>.
Attributes of the <c: out> core action tag.
- value: It specify the expression which needs to be evaluated.
- default: We can use this attribute if the resulting value is null.
- escapeXml: It checks whether there is any need to convert the &, <, > etc to their character encoding codes.
In this example we have used only one attribute of <c: out>. The attribute value which is a must attribute and by using this attribute we are calculating the sum of numbers and displaying the output on the browser.
The code of the program is given below:
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %> <html> <head> <title>Adding numbers by using c: out</title> </head> <body> <h1>Adding numbers by using c: out</h1> 10 + 20 + 30 = <c:out value="${10 + 20 + 30}" /><br> </body> </html> |
The output of the program is given below: