{ isErrorPage= true|false 

}

{ contentType= ctinfo 

}

The details of the attributes are as follows:

language

Defines the scripting language to be used in the scriptlets, expression 

scriptlets, and declarations within the body of the translation unit (the 

JSP page and any files included using the 

include

 directive below).

In JSP 1.1, the only defined and required scripting language value for 

this attribute is  

java

 . This specification only describes the 

semantics of scripts for when the value of the language attribute is 

 java .

When  

java

  is the value of the scripting language, the Java 

Programming Language source code fragments used within the 

translation unit are required to conform to the Java Programming 

Language Specification in the way indicated in Chapter 4.

All scripting languages must provide some implicit objects that a JSP 

page  author can use in declarations, scriptlets, and expressions. The 

specific objects that can be used are defined in Section 2.8,  Implicit 

Objects . 

All scripting languages must support the Java Runtime Environment 

(JRE). All scripting languages must expose the Java technology object 

model to the script environment, especially implicit variables, 

JavaBeans component properties, and public methods.

Future versions of the JSP specification may define additional values 

for the language attribute and all such values are reserved.

It is a fatal translation error for a directive with a non 

 java 

language attribute to appear after the first scripting element has been 

encountered.

extends

The value is a fully qualified Java programming language class name, 

that names the superclass of the class to which this JSP page is 

transformed (see Chapter 3).

This attribute should not be used without careful consideration as it 

restricts the ability of the JSP container to provide specialized 

superclasses that may improve on the quality of rendered service.  See 

Section 5.8.1 for an alternate way to introduce objects into a JSP page 

that does not have this drawback.

Chapter 2

Standard Syntax and Semantics

44