public class Methoden
{
    
public static int quadrat(int x) {
    int quadrat;
    quadrat = x * x;
    return quadrat;
    }
    
    public static void test()
    {
        System.out.println(quadrat(3));
    }


    public static void quadratzahlen(){
        
        int x = 1;
        while(quadrat(x) < 500){
            
            System.out.println(quadrat(x));
            x++;
        }
    }
    
}