Exception in thread "main" java.lang.Error: Unresolved compilation problem:
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控制台报错直接定位到public static void main(String args[])这一行,仔细看程序,发现第一行import处有一条短的红色波浪线提示,鼠标移过去显示:
恍然大悟,是代码直接从别的文件里拷过来,没有说明这个是在哪个包,加上package demo;就好了
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