implements confrontatore

src/FigureGeometriche/Confrontatore.java

@@ -0,0 +1,3 @@
+public interface Confrontatore{
+    boolean confronto(Object ob1, Object ob2);
+}

src/FigureGeometriche/ConfrontoArea.java

@@ -0,0 +1,9 @@
+public class ConfrontoArea implements Confrontatore{
+
+    public boolean confronto(Object ob1, Object ob2){
+        FiguraGeometrica fg1 = (FiguraGeometrica) ob1;
+        FiguraGeometrica fg2 = (FiguraGeometrica) ob2;
+
+        return fg1.calcolaArea()>fg2.calcolaArea();
+    }
+}

src/FigureGeometriche/ConfrontoPerimetro.java

@@ -0,0 +1,9 @@
+public class ConfrontoPerimetro implements Confrontatore{
+
+    public boolean confronto(Object ob1, Object ob2){
+        FiguraGeometrica fg1 = (FiguraGeometrica) ob1;
+        FiguraGeometrica fg2 = (FiguraGeometrica) ob2;
+
+        return fg1.calcolaPerimetro()>fg2.calcolaPerimetro();
+    }
+}

src/FigureGeometriche/Manager.java

@@ -26,47 +26,35 @@ public class Manager{
 
 		return fg;
 	}
-	
-	public FiguraGeometrica getAreaMax() {
+
+	public FiguraGeometrica getMax(String tipo){
+		Confrontatore conf = null;
+		if(tipo.equals("perimetro")) conf = new ConfrontoPerimetro();
+		if(tipo.equals("area")) conf = new ConfrontoArea();
+
 		FiguraGeometrica max = figure.get(0);
 
 		for (int i = 1; i < figure.size(); i++)
-			if (max.calcolaArea() < figure.get(i).calcolaArea())
+			if (!conf.confronto(max, figure.get(i)))
 				max = figure.get(i);
 		
 		return max;
 	}
 
-	public FiguraGeometrica getAreaMin() {
-		FiguraGeometrica min = figure.get(0);
+	public FiguraGeometrica getMin(String tipo){
+		Confrontatore conf = null;
+		if(tipo.equals("perimetro")) conf = new ConfrontoPerimetro();
+		if(tipo.equals("area")) conf = new ConfrontoArea();
 
-		for (int i = 1; i < figure.size(); i++)
-			if (min.calcolaArea() > figure.get(i).calcolaArea())
-				min = figure.get(i);
-		
-		return min;
-	}
-	
-	public FiguraGeometrica getPerimetroMax(){
 		FiguraGeometrica max = figure.get(0);
 
 		for (int i = 1; i < figure.size(); i++)
-			if (max.calcolaPerimetro() < figure.get(i).calcolaPerimetro())
+			if (conf.confronto(max, figure.get(i)))
 				max = figure.get(i);
-		
+
 		return max;
 	}
 
-	public FiguraGeometrica getPerimetroMin(){
-		FiguraGeometrica min = figure.get(0);
-
-		for (int i = 1; i < figure.size(); i++)
-			if (min.calcolaPerimetro() > figure.get(i).calcolaPerimetro())
-				min = figure.get(i);
-
-		return min;
-	}
-	
 	public void print(PrintStream ps){
 		for(FiguraGeometrica fg: figure)
 			fg.print(ps);

src/FigureGeometriche/Test.java

@@ -9,8 +9,8 @@ public class Test {
 		PrintStream ps = System.out;
 		
 		ps.println("Figura con area maggiore");
-		manager.getAreaMax().print(ps);
+		manager.getMax("area").print(ps);
 		ps.println("Figura con perimetro minore");
-		manager.getPerimetroMin().print(ps);
+		manager.getMin("perimetro").print(ps);
 	}
 }