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class Stats<T extends Number> { T[] nums; // Constructor Stats(T[] nums) { this.nums = nums; } // Calculate average double average() { double sum = 0; for (T num : nums) { sum += num.doubleValue(); } return sum / nums.length; } } public class Main { public static void main(String[] args) { // Use with Integer Integer[] intNums = {10, 20, 30, 40}; Stats<Integer> intStats = new Stats<>(intNums); System.out.println("Integer average: " + intStats.average()); // Use with Double Double[] doubleNums = {1.5, 2.5, 3.5}; Stats<Double> doubleStats = new Stats<>(doubleNums); System.out.println("Double average: " + doubleStats.average()); } }
Integer average: 25.0
Double average: 2.5
