将类型 T 列表转换为对象

Question

I have a method which takes generic T type parameters.

public<T> void run(List<T> inputs){
 System.out.println((Student) inputs.get(0).getFirstName());

}

I am trying to access Student class methods inside run method.

But I am getting cannot resolve method 'getFirstName()' compilation error.

Please help!

Answer 1

Your calling getFirstName() method with the wrong reference.please find below code.

Keep this type casting '(Student) inputs.get(0)' in ().

public<T> void run(List<T> inputs){
 System.out.println( ((Student) inputs.get(0)).getFirstName());

}