- 该错误会任意出现，并且尽管我的代码很可靠，但也造成了很多麻烦.
我做了以下事情:
- 我在netbeans上关闭了它.
- 然后通过单击打开项目"，选择我的项目，然后打开
- 只需按一下netbeans中的运行按钮.
我不会构建或清理它.希望对您有帮助.
I would not build or clean build it. Hope that helps you out.
- 我注意到发生这种情况的另一个原因.如果将主类移至另一个包，则会出现相同的错误.在这种情况下，您:
- 右键单击项目">属性">运行"
- 通过单击浏览"并选择正确设置主类".
- I noticed another reason why this happens. If you moved your main class to another package, the same error springs up. In that case you :
- Right Click Project > Properties > Run
- Set the "Main Class" correctly by clicking "Browse" and selecting.
