The method assertEquals(double, double) from the type Assert is deprecated
从网上下载的视频，看着视频做。居然和人家的不一样。assertEquals(double expected,double actul) 被废弃了,换成assertEquals(double expected,double actul,double delta)也就是在原来的方法上加一个误差值（double类型）官方解释为：@Deprecatedstatic public voi
