Search code examples
javaclassgenericsparameter-passingdeserialization

Cannot access class methods via generics

I changed my method to generic method. What is happening now is that I was deserializing the class inside the methodB and accessing its methods which I can not do anymore.

<T> void methodB(Class<T> clazz) {
    T var;
    HashMap<String, T> hash = new HashMap<>();
}

void methodA () {
  methodB(classA.class);
}

Initially inside methodB with no generics,

var = mapper.convertValue(iter.next(), ClassA.class);
var.blah() //works fine

After using generics,

var = mapper.convertValue(iter.next(), clazz);
var.blah() //cannot resolve the method.

How do I access blah() method of classA?

Solution

  • Thanks to Passing a class with type parameter as type parameter for generic method in Java. Solved using TypeToken