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汪滶不断还礼，也是笑得合不拢嘴。連載小説 木村佳乃 陰山泰CBSAllAccess宣布续订《星际迷航：发现号》第四季,第四季的拍摄将于11月2日开始。雷蒙德·巴隆是纽约一家体育报社的记者，他与妻子戴博拉、四岁的女儿艾利以及一对两岁的双胞胎——迈克和杰夫里，一起住在纽约长岛一栋宽敞漂亮的房子里。雷蒙德在工作上取得的优异成就和宽容风趣的性格让他成为家人的骄傲，以及所有人爱戴的对象；贤妻良母型的全职母亲戴博拉的精心经营更让这个年轻的五口之家成为美国三好家庭的文明典范。然而，家家的确都会有本难念的经……This principle means that there are no methods in each interface that subclasses cannot use but must implement. If not, the interface must be split. It is better to use multiple isolated interfaces than to use a single interface (an interface where multiple interface methods are assembled into one).I follow the execution process of this small program: first, I take exp and "\ +" as parameters, call the calculation (String, String) method in the AbstractCalculator class, call split () of the same kind in the calculation (String, String), then call the calculation (int, int) method, enter the subclass from this method, after executing return num1 + num2, return the value to the AbstractCalculator class, assign it to result, and print it out. This just verifies our thinking at the beginning.