int x = 10;
while (x > 0) {
    x -= 3;
    System.out.print(x + " ");
}

class Test {
    int x;
}
public class Main {
    public static void main(String[] args) {
        Test t = new Test();
        System.out.println(t.x);
    }
}

class Animal {
    public String sound() {
        return "Generic animal sound";
    }
}

class Dog extends Animal {
    @Override
    public String sound() {
        return super.sound() + " + Bark";
    }
}

public class Main {
    public static void main(String[] args) {
        Dog d = new Dog();
        System.out.println(d.sound());
    }
}

public class Main {
    public static void main(String[] args) {
        int x = 5;
        int y = 2;
        System.out.println(x + y * x);
    }
}

class A {
  int x = 5;
}
class B extends A {
  int x = 10;
  int get(){ return super.x; }
}
B b = new B();
System.out.println(b.get());

int[] arr = {2, 4, 6, 8};
int sum = 0;
for(int i = 0; i < arr.length; i += 2){
    sum += arr[i];
}
System.out.println(sum);