java.lang.Number doesn't implement “+” or any other operators?

Question

I\'m creating a class which is supposed to be able to be used with an array of any type of number (float, int, etc), so here is one method I have:

// T exten         


        

Answer 1

I think this is what you want

public synchronized average() {  
    double ret = new double[queue[0].length];  
    for (int i = 0; i < ret.length; ++i) {  
        for (int j = 0; j < size; ++j) {  
            ret[i] += queue[j][i];  
        }  
        ret[i] /= size;  
    }  
    return ret;  
}