设n为自然数n=1*2*3（n-1）*n称为n的阶乘，并且0=1。用java编写程序计算2！4！6！10将结果输出

Sure, I can help you with that! Here's the Java code:

public class Main {
    public static void main(String[] args) {
        int[] nums = {2, 4, 6, 10};

        for (int num : nums) {
            long fact = 1;
            for (int i = 1; i <= num; i++) {
                fact *= i;
            }
            System.out.println(num + "! = " + fact);
        }
    }
}

This program will calculate the factorials of 2, 4, 6, and 10, and output the results. Let me know if you have any other questions!