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| class Point
{
private int x, y, dx, dy;
public Point(int x, int y) throws ErrConst
{
if((x<0) || (y<0)) throw new ErrConst();
this.x = x;
this.y = y;
}
public void deplace(int dx, int dy) throws ErrDepl
{
if (((x+dx)<0) || ((y+dy)<0)) throw ErrDepl();
x+=dx;
y+=dy;
}
public void affiche()
{
System.out.println("Coordonnées : " + x + " " + y);
}
}
class ErrConst extends Exception
{}
class ErrDepl extends Exception
{}
public class Except1
{
public static void main(String [] arg)
{
try
{
Point a = new Point(1,4);
a.affiche();
a = new Point(-1,5);
a.affiche();
}
catch(ErrConst e)
{
System.out.println("Erreur de construction !");
System.exit(-1);
}
catch(ErrDepl e)
{
System.out.println("Erreur de déplacement !");
System.exit(-1);
}
}
} |
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