Java alternative to multiple inheritance

Question

Since I know Java doesn't support multiple inheritance, I'd like to know how could I implement this design in Java:

Class StudentModel extends BaseModel{
   public void doSomething(){};
}
Class ParentModel{
   protected List<BaseModel> children = new List<BaseModel>();
   public void addChild(BaseModel child){
      children.add(child);
   }
   // and other parent-children related functionality
}

Class ConcreteParentModel{
    // should contain both StudentModel and ParentModel functionalily
}

Thanks!

Answer 1

You should use an adapter pattern

In software engineering, the adapter pattern is a software design pattern that allows the interface of an existing class to be used from another interface. It is often used to make existing classes work with others without modifying their source code.