Eclipse - 将 JAR 导入项目

Question

I have no experience in Java and I need to build a simple project to send emails via SMTP.

I try to use JavaMail https://javaee.github.io/javamail/ for that.

I have imported the JAR file into my project and wrote a couple of simple methods.

The project has no errors but when I run it I get the following error:

Error: Unable to initialize main class mail.mail

Caused by: java.lang.NoClassDefFoundError: javax/mail/Address

My project is a simple Java project, its not a Maven project.

What am I supposed to do to make it work?

Some screenshots are attached below.

Answer 1

The problem has been solved by replacing javax.mail with another version.