Java – in a convertible cast, convert from t to double

I want to create a generic method to get the maximum value from an array But I met T and math Max method uses conversion between types

This is my code: first, I can't initialize maxvalue, such as:

T maxVaue = 0;

Second, I can't be in math Using data [i] in Max, I get the error of in convertible cast in both cases

class Matrix<T>{
    public T getMaxValue(T[] data){
        T maxValue;
        for (int i=0; i<data.length; i++){
            maxValue = Math.max(data[i],maxValue);
        }
        return maxValue;
    }
}

Solution

Math. Max only accepts int, float, double and long So you can't use t

What you can do is write your own max () method using t For example, your method can use the comparator object in param Or your t object can implement the comparable interface

Look at this article: how to implement a generic ` max (comparable a, comparable b) ` function in Java?