一、代码实现

1.接口创建

package work11_2022_12_08;

public interface Car {
	
	void driver();

}

2.实现类创建

a.实现类①

package work11_2022_12_08;

public class Car_1 implements Car{

	@Override
	public void driver() {
		System.out.println("汽车一号正在行驶。。。。。。");
		
	}

}

b.实现类②

package work11_2022_12_08;

public class Car_2 implements Car{

	@Override
	public void driver() {
		System.out.println("汽车二号正在行驶。。。。。。");
		
	}

}

c.实现类③

package work11_2022_12_08;

public class Car_3 implements Car{

	@Override
	public void driver() {
		System.out.println("汽车三号正在行驶。。。。。。");
		
	}

}

3.测试类编写

package work11_2022_12_08;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class CarTest {
	
	public static void main(String[] args){
		
		Car car1 = extracted("work11_2022_12_08.Car_1");
		car1.driver();
			
		System.out.println("------------------------------------");
		
		Car car2 = extracted("work11_2022_12_08.Car_2");
		car2.driver();
		
		System.out.println("------------------------------------");
		
		Car car3 = extracted("work11_2022_12_08.Car_3");
		car3.driver();
	}

	private static Car extracted(String classPath) {
		try {
			Class forName = Class.forName(classPath);
			
//			Method declaredMethod = forName.getDeclaredMethod("driver");
			
			Car car = (Car) forName.newInstance();
			
			return car;
			
//			declaredMethod.invoke(newInstance);
		} catch (Exception e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		return null;
		
	}

}

二、测试