Вот программа на Java, позволяющая найти сумму всех четных чисел от 1 до 10:

public class SumOfEvenNumbers {
    public static void main(String[] args) {
        int sum = 0;

        // Method 1: Using a for loop
        for (int i = 1; i <= 10; i++) {
            if (i % 2 == 0) {
                sum += i;
            }
        }
        System.out.println("Method 1 - Sum of even numbers: " + sum);

        // Method 2: Using a while loop
        sum = 0;
        int num = 1;
        while (num <= 10) {
            if (num % 2 == 0) {
                sum += num;
            }
            num++;
        }
        System.out.println("Method 2 - Sum of even numbers: " + sum);

        // Method 3: Using a do-while loop
        sum = 0;
        num = 1;
        do {
            if (num % 2 == 0) {
                sum += num;
            }
            num++;
        } while (num <= 10);
        System.out.println("Method 3 - Sum of even numbers: " + sum);
    }
}