Question

I tried to create a Model object:

ClassA classA = getClassA();
Model model = new Model(classA);

When I tried to compile it, the following compile error occurs:

cannot find symbol : constructor Model(ClassA)

Why wouldn’t ClassA be allowed here?

Answer 1

You need to add a generic type to the model class.

Try this:

ClassA classA = getClassA();
Model<ClassA> model = new Model<ClassA>(classA);

Without the generic type, Java can’t find an appropriate constructor, hence the error message.