Error: Could not find or load main class when class extends HttpServlet

Question

I have this class:

public class Test  {
    public static void main(String[] args) {
        System.out.println("hey");
    }
}

it works fine. But if I make it extend HttpServlet:

public class Test extends HttpServlet {
    public static void main(String[] args) {
        System.out.println("hey");
    }
}

I get a Error: Could not find or load main class Test error.

I also use Maven, but in this case try to compile&run the class by hand in Idea Intellij.

Edit: I import servlet like this:

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>provided</scope>
    </dependency>

I also tried to test other dependency:

<dependency>
        <groupId>org.jsoup</groupId>
        <artifactId>jsoup</artifactId>
        <version>1.11.3</version>
</dependency>

public class TestServlet {
    public static void main(String[] args) {
        System.out.println("hi");
        Jsoup soup;
    }


}

works fine. The moment I add extends HttpServlet, I get the error again.

@user207421 I get it by right clicking a .java file name in Idea Intellij and clicking Run. — parsecer, Jul 10 '19 at 22:37

score 0 · Answer 1 · answered Jul 10 '19 at 19:36

0

Add the Servlets API file to your Classpath. I wonder you didn't imported it too, if not, import it.

answered Jul 10 '19 at 19:36

Cristian Ramírez Fonseca

13
4

I have imported it with Maven. I can import the class inside the source code - Idea gives no error. – parsecer Jul 10 '19 at 20:30
Can you put a Java code snippet in your question in the lines where you're importing the HttpServlet API? – Cristian Ramírez Fonseca Jul 10 '19 at 21:52
Yes, buddy, but you gotta import it anyway. something like " import javax.servlet.http.HttpServlet;". Please tell me if it worked. I widely recommend you not to use Maven if you're new to Java programming. Just start with simple things, you'll understand it later. – Cristian Ramírez Fonseca Jul 11 '19 at 18:13
I already solved it. And I'm not new to Java. Nor do I think novice Java programmers should avoid Maven, it is a great help when managing dependencies. – parsecer Jul 11 '19 at 21:21

parsecer · Answer 2 · 2019-07-11T10:58:22.863

-1

I managed to solve it. I went to File - Project Structure:

Then to Modules:

There was a Provided scope near the servlet module. I changed it to Compile:

And it worked!

edited Jul 11 '19 at 10:58

answered Jul 10 '19 at 23:08

parsecer

4,758
13
71
140

Error: Could not find or load main class when class extends HttpServlet

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