JSP Declaration Tag
The JSP declaration tag is used to
declare fields and methods.
The code written inside the jsp declaration tag is placed outside
the service() method of auto generated servlet.
Syntax of JSP declaration tag
The syntax of the declaration tag is
<%! field or method declaration %>
The syntax of the declaration tag is
<%! field or method declaration %>
 |
Fig: JSP Declaration Tag |
Example of JSP declaration tag that declares field
In this example of JSP declaration tag, we are declaring the field
and printing the value of the declared field using the jsp expression tag.
In this example of JSP declaration tag, we are declaring the field
and printing the value of the declared field using the jsp expression tag.
index.jsp
<html>
<html>
<body>
<%! int data=50; %>
<%= "Value of the variable is:"+data %>
</body>
</html>
Example of JSP declaration tag that declares method
In this example of JSP declaration tag, we are defining the method
which returns the cube of given number and calling this method from the jsp
expression tag. But we can also use jsp scriptlet tag to call the declared
method.
In this example of JSP declaration tag, we are defining the method
which returns the cube of given number and calling this method from the jsp
expression tag. But we can also use jsp scriptlet tag to call the declared
method.
index.jsp
<html>
<html>
<body>
<%!
int cube(int n){
return n*n*n*;
}
%>
<%= "Cube of 3 is:"+cube(3) %>
</body>
</html>
Hello, my name is Pramod Dwivedi. I'm a 5 year old self-employed in online business Industry.
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