依赖倒置原则(dependence inversion priiciple,dip)
介绍
high level modules should not depend upon low level modules. both should depend upon abstractions. abstractions should not depend upon details....
看如下一个例子:
pulic class Geely{
public void studyJavaCourse(){
System.out.println("Geely在学习Java");
}
public void studyFECourse(){
System.out.println("Geely在学习FE...