java - Saving java file in maven project fails

Question

when I try to save a java file in my project the following error occurs.

Failed to (re)build the JAX-RS metamodel for projet TestApp java.lang.NullPointerException

It only occurs when I create the default constructor so

public class Account {
    public Account () {}
}

gets the error, while

 public class Account {
 }

does not get it.

I was using the jboss-javaee6-webapp-blank-archetype to create my project

Answer 1

我自己发现了失败，没有创建 src/main/java 文件夹（我的文件在资源文件夹中），我重新安装了 Eclipse，现在创建了文件夹，当我在那里有我的 java 文件时，我没有再报错。