Java newInstance（“Sample”）在不应该[重复]时返回classNotFoundException

Question

我在Spring学习依赖注入有时

//Main class

class Main{

 public static void main(String []args){

 try{

  Car c = carFactory.getCar("Axio");
  c.print();

  }catch(Exception e){
  System.out.println(e);
  }
 }
}

//Car Interface

public interface Car{
 public void print();   
}

//Car Interface implementation class

class Axio implements Car{

 public void print(){
  System.out.println("Axio car is called...");
 }

}

//Car Factory class

class carFactory{

 public static Car getCar(String carName)throws Exception{

  return (Car)Class.forName(carName).newInstance(); 

 }

}

Answer 1

尝试在类中提供类的完全限定名。forName（），它应该可以工作。