类的的声明本来没问题,但总是用个!,警告错误.
public class CBox extends JPanel implements Runnable
总出现错误,虽然编译过去,但是有个!,总让人不爽.
The serializable class CBox does not declare a static final serialVersionUID
field of type long
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头疼的!
类的的声明本来没问题,但总是用个!,警告错误. public class CBox extends JPanel implements Runnable 总出现错误,虽然编译过去,但是有个!,总让人不爽. The serializable class CBox does not declare a static final serialVersionUID field of type long