Spring Framework Error: Unable to locate or load main class

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I’m following some lessons from a Spring workshop, but I can’t go on because of the mistake: Unable to locate or load main class. Below is the code containing the main function:

package com.algaworks.vinhos;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OficinaSpringFrameworkApplication {

    public static void main(String[] args) {
        SpringApplication.run(OficinaSpringFrameworkApplication.class, args);
    }
}

Below is the folder structure:

inserir a descrição da imagem aqui

java spring spring-boot

  • How are you running the project? By Maven? Gradle? IDE? Where is this error being displayed?

  • I am running the project through Spring Tool Suite, the error appears in the IDE console. Before compiling a message is displayed warning that the project has errors.

  • You can include the folder structure of your project?

  • Added folder structure in post

1 answer

0

This message in STS could be a Maven repository problem. I already had a project that was working, crashing and starting to make this mistake after downloading other Ibraries to another project. Do Maven - Update Project and wait until the end of STS update, might solve the problem.

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