Question

I’m trying to use a class I defined in a package in my Java Web Project, however I keep getting errors when I use the class I defined in the package. The error is saying that the class cannot be resolved to a type. I am importing the package that I made that contains the class that I want to use.

Answer 1

The class needs to be located in webapp’s /WEB-INF/classes in a folder structure which represents the declared package. So if you have for example

package com.example;

public class Foo {
    // ...
}

then you should have a /WEB-INF/classes/com/example/Foo.class file. Please keep in mind that this is case sensitive as everything else in Java.

Another possible cause is when you’re trying to use it in a <jsp:useBean> tag, that it should have a (implicit) default constructor which doesn’t throw an exception upon construction.