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1、依赖倒置的本质就是通过抽象（接口或者抽象类）使各个类或模块实现彼此独立。
public interface ICar{
public void run();
}
public interface IDriver{
public void drive(ICar car);
}
public class Driver implements IDriver{
@Override
public void drive(ICar car) {
car.run();
}
}
public class Benz implements ICar{
@Override
public void run() {
System.out.println(" benz running");
}
}
public class Bmw implements ICar{
@Override
public void run() {
System.out.println(" bmw running");
}
}
public void main(String[] args){
IDriver wanglei = new Driver();
ICar benz = new Benz();
wanglei.drive(benz);
}
依赖的三种写法：
1、构造函数传递依赖对象
public interface IDriver{
public void drive();
}
public class Driver implements IDriver{
private ICar mCar;
public void Driver(ICar car){
this.mCar = car;
}
@Override
public void drive() {
mCar.run();
}
}
2、set方法传递依赖对象
public interface IDriver{
public void drive();
public void setCar(ICar car);
}
public class Driver implements IDriver{
private ICar mCar;
@Override
public void drive() {
mCar.run();
}
@Override
public void setCar(ICar car) {
this.mCar = car;
}
}
3、接口声明依赖对象
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原文地址：http://www.cnblogs.com/wangqian-easy/p/4836215.html
