[Java] Appeler un constructeur dans le corps d'une méthode

public class PointXY
{
    protected double x,y;
    
    public PointXY(double x, double y)
    {
    	this.x=x;
    	this.y=y;
    }
    
    public void afficher()
    {
        System.out.println("x = "+x);
        System.out.println("y = "+y);
    }
}

public class PointXYZ extends PointXY
{
    protected double z;

    public PointXYZ(double x, double y,double z)
    {
    	super(x,y);
    	this.z=z;
    }
    
    public void afficher()
    {
        super.afficher();
        System.out.println("z = "+z);
    }
}

public class Test
{
    public static void main(String[] args)
    {
        PointXY xy = new PointXY(1,2);
        xy.afficher();
		
        PointXYZ xyz = new PointXYZ(3,4,5);		
        xyz.afficher();
    }
}