有没有办法可以使用该类的现有实例（对象）

Question

I have a class implemented as below

@Builder
class A extends B {

   @Getter
   public List<Customer> cusromers = new ArrayList<>();

   @Override
   public void add(){
     c.add(obj);
   }

}

Below is in different project

class C {
    public Student<T, C> getValues() {
        return A.builder().customers(getCustomers()).build()
    }
}

The below is different project and has dependency of the above's project

@Test
class Test {
   // I need to check the instance of class A and test if the instance has added some modifications for the list above stated class
}

Please any one help me on this. Excuse me if i do any mistake

Answer 1

You probably need some @Getter and @Setter annotation in combination with your @Builder .

@Getter
@Setter
@Builder
class A extends B {

   public List<Customer> customers = new ArrayList<>();

   @Override
   public void add(){
     customers.add(new Customer());
   }

}

@Test
class Test {
    A a = new A():
    List<Customer> customers = a.getCustomers();
    assertEquals(1, customers.size());
}