how to import javax in java?

I need an object of javax.servlet.jsp.JspWriter in my JAVA program. I have to import javax, but I do not know how to do开发者_开发技巧 it.

I use ant for compiling my project and no IDE, just commandline.

Should I download a package or something and put it in my project? Or there is another way?

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An IDE would ease thing considerable. Ant intergrates with Eclipse and helps to ease management of imports.

For the commandline; download the appropriate jar, add it to the classpath using -Djava.ext.dirs=

I presume that you can take it from here!

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To import javax.servlet.jsp.JspWriter you place an import statement at the top of your file, after the package declaration, but before the class declaration. The import statement would look like:

import  javax.servlet.jsp.JspWriter;

This tells the compiler to interpret uses of JspWriter as javax.servlet.jsp.JspWriter

For example:

package somepackage;

import  javax.servlet.jsp.JspWriter;

public class AClass {
    //Class contents here
}

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I need an object of javax.servlet.jsp.JspWriter in my JAVA program. I have to import javax

No you don't, you have to import javax.servlet.jsp.JspWriter. So do that. If it doesn't compile, adjust your classpath or your IDE project settings to include the appropriate JAR file.