Create 09b. Create Storage set methods

Week 4: Writing classes/09b. Create Storage set methods

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+In the attached program, the class Storage is defined.
+
+Implement the missing setting methods for all attributes in the warehouse.
+
+The state of the object is subject to the following constraints, which must be taken into account in the setting methods:
+identifier can be any string
+capacity must not be negative or zero
+objects must not be negative or greater than the capacity
+
+
+
+
+
+import java.util.Random;
+
+public class Test {
+    public static void main(String[] args) {
+        final Random r = new Random();
+        
+
+        System.out.println("Testing the class...");
+
+        Warehouse w1 = new Warehouse("Cellar", 20, 0);
+        Warehouse w2 = new Warehouse("Attic", 30, 0);
+        Warehouse w3 = new Warehouse("RootCellar", 10, 0);
+
+        Warehouse[] warehouses = {w1, w2, w3};
+
+        for (Warehouse warehouse : warehouses) {
+            System.out.println("Created warehouse with the statement");
+            System.out.println("" + warehouse);
+
+            String identifier = warehouse.getIdentifier() + (r.nextInt(10) + 1);
+            System.out.println("Setting identifier to " + identifier);
+            warehouse.setIdentifier(identifier);
+            System.out.println("Identifier now: " + warehouse.getIdentifier());
+            System.out.println("");
+
+            int capacity = r.nextInt(40) + 10;
+            System.out.println("Setting a valid value for capacity: " + capacity);
+            warehouse.setCapacity(capacity);
+            System.out.println("Capacity now: " + warehouse.getCapacity());
+            System.out.println("");
+
+            int negCapa = 0 - r.nextInt(40) - 1;
+            System.out.println("Setting a forbidden value for capacity: " + negCapa);
+            warehouse.setCapacity(negCapa);
+            System.out.println("Capacity now: " + warehouse.getCapacity());
+            System.out.println("");
+
+            int items = warehouse.getCapacity() - r.nextInt(warehouse.getCapacity());
+            System.out.println("Setting a valid value for items: " + items);
+            warehouse.setItems(items);
+            System.out.println("Items now: " + warehouse.getItems());
+            System.out.println("");
+
+            items = warehouse.getCapacity() + r.nextInt(10) + 1;
+            System.out.println("Setting a forbidden value for items: " + items);
+            warehouse.setItems(items);
+            System.out.println("Items now: " + warehouse.getItems());
+            System.out.println("");       
+        }
+    }
+}
+
+class Warehouse {
+    private String identifier;
+    private int capacity;
+    private int items;
+
+    public Warehouse(String identifier, int capacity, int items) {
+        this.identifier = identifier;
+        this.capacity = capacity;
+        this.items = items;
+    }
+
+    public String getIdentifier() {
+        return identifier;
+    }
+
+    public int getCapacity() {
+        return capacity;
+    }
+
+    public int getItems() {
+        return items;
+    }
+
+
+
+    //ADD HERE
+    public void setIdentifier(String identifier) {
+        this.identifier = identifier;
+    }
+
+    public void setCapacity(int capacity) {
+        if (capacity > 0) {
+            this.capacity = capacity;        
+        }
+    }
+
+    public void setItems(int items) {
+        if ((items >= 0) && (items <= capacity)) {
+            this.items = items;       
+        }
+    }
+
+
+
+
+
+
+
+
+    @Override
+    public String toString() {
+        return "Warehouse(" + identifier + ", " + capacity + ", " + items + ")";
+    }
+}
+
+
+
+
+
+
+
+Testing the class...
+Created warehouse with the statement
+Warehouse(Cellar, 20, 0)
+Setting identifier to Cellar2
+Identifier now: Cellar2
+
+Setting a valid value for capacity: 42
+Capacity now: 42
+
+Setting a forbidden value for capacity: -8
+Capacity now: 42
+
+Setting a valid value for items: 23
+Items now: 23
+
+Setting a forbidden value for items: 50
+Items now: 23
+
+Created warehouse with the statement
+Warehouse(Attic, 30, 0)
+Setting identifier to Attic9
+Identifier now: Attic9
+
+Setting a valid value for capacity: 26
+Capacity now: 26
+
+Setting a forbidden value for capacity: -40
+Capacity now: 26
+
+Setting a valid value for items: 15
+Items now: 15
+
+Setting a forbidden value for items: 27
+Items now: 15
+
+Created warehouse with the statement
+Warehouse(RootCellar, 10, 0)
+Setting identifier to RootCellar6
+Identifier now: RootCellar6
+
+Setting a valid value for capacity: 30
+Capacity now: 30
+
+Setting a forbidden value for capacity: -19
+Capacity now: 30
+
+Setting a valid value for items: 18
+Items now: 18
+
+Setting a forbidden value for items: 33
+Items now: 18
+
+