对自定义类型使用泛型

Question

I am working with some methods that write every type in a custom way. These are the signatures:

public void write(Boolean value);
public void write(Byte value);
...
public void write(Integer value);
public void write(Long value);

As the signatures are the same but changing the type, I have been thinking on using generics and a method that receives an unknown type and uses the correct method. Something similar to this:

public <T> void doWrite(T data) {
    write(data);
}

In this case the compiler gives me this error:

The method write(Boolean) in the type Writer is not applicable for the arguments (T).

Any hint on how could I do it ?

Answer 1

As a rule of thumb, you should consider using generics when your code gets a lot of type querying (casts, instanceof). The purpose is to eliminate this casting. Your case seems not to be of this kind. On the contrary you will introduce this type querying by refactoring your code the way you ask, so I don't think it is apropriate