Exercice 6, Partie 3.

src/exercice6part3.java

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+import partie6.ErrConst;
+import partie6.ErrDepl;
+import partie6.Point;
+
+// TestPoint
+public class exercice6part3 {
+    public static void main(String[] args) {
+        try {
+            Point a = new Point(Integer.parseInt(args[0]), 4);
+            a.affiche();
+            a.deplace(10,Integer.parseInt(args[1]));
+            a.affiche();
+        } catch (ErrConst e) {
+            System.out.println("Value of y: " + e.getOrd());
+            System.out.println("Value of x: " + e.getAbs());
+            e.printStackTrace();
+            System.exit(-1);
+        } catch (ErrDepl e) {
+            e.printStackTrace();
+            System.exit(-1);
+        }
+    }
+}

src/partie6/ErrConst.java

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+package partie6;
+
+public class ErrConst extends Exception {
+    String message;
+    int abs;
+    int ord;
+
+    ErrConst() {
+        this.message = "Exception thrown.";
+    }
+
+    ErrConst(String s) {
+        this.message = s;
+    }
+
+    ErrConst(int x, int y) {
+        this.abs = x;
+        this.ord = y;
+        if (x < 0)
+            this.message = "X can't be negative";
+        if (y < 0)
+            this.message = "Y can't be negative";
+    }
+
+    public int getAbs() {
+        return this.abs;
+    }
+
+    public int getOrd() {
+        return this.ord;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}

src/partie6/ErrDepl.java

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+package partie6;
+
+public class ErrDepl extends Exception {
+    String message;
+
+    ErrDepl() {
+        this.message = "When moving a point, the result can't be negative.";
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}

src/partie6/Point.java

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+package partie6;
+
+public class Point {
+    public int x;
+    public int y;
+
+    public Point(int x, int y) throws ErrConst {
+        if ((x < 0) || (y < 0))
+            throw new ErrConst(x, y);
+        this.x = x;
+        this.y = y;
+    }
+
+    public void affiche() {
+        System.out.println("Coordonnees [X= " + this.x + "],[Y= " + this.y + "]");
+    }
+
+    public void deplace(int dx, int dy) throws ErrDepl {
+        if (((x + dx) < 0) || ((y + dy) < 0))
+            throw new ErrDepl();
+        x += dx;
+        y += dy;
+    }
+}