my eclipse中出现The selection does not support run mode

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my eclipse中出现The selection does not support run mode
我新建了两个类,一个是父类,一个是子类,可子类不能运行

关于Eclipse/MyEclipse中The selection does not support run mode的解决
Eclipse或者MyEclipse中,当你运行一个程序的时候,可能弹出一个小窗口：The selection does not support run mode.原因可能有两个：
1.main方法声明有问题.
2.Eclipse需要配置JDK.
对于这样的问题,可以：首先检查main方法的声明,是否为public class 中的方法,方法声明是否是public static void main(String args[]),如果无误,则可能是第2种原因造成的.或者,如果,同一个Eclipse中的其它的程序能运行,但是这个不行,那就是第一种原因.
对于第2种原因,可以通过：Window-->Preference-->左侧的Java-->左侧的Installed JREs-->右侧的add-->然后点击JRE home directory后面的Browse指定JDK的安装目录--->然后再依次点击确定即可解决.

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