Question

How to create a class with static variable and static method in Java

Answer 1

class Item {
    private String itemName;
    private static int counter = 0; 

    public void getItem(String _itemName) {
        itemName = _itemName;
        counter++;
    }

    public void showItem() {
        System.out.println("Item Name: " + itemName + "\tQuantity: " + counter);
    }

    public static int getCounter() {
        return counter;
    }
}

class Program {
    public static void main(String[] s) {
        try {
            Item i1 = new Item();
            i1.getItem("BMW XM Label Red");
            i1.showItem();
            
            Item i2 = new Item();
            i2.getItem("Desktop PC");
            i2.showItem();
            
            Item i3 = new Item();
            i3.getItem("Laptop");
            i3.showItem();

            System.out.println("Total objects created: " + Item.getCounter());
        } catch (Exception e) {
            System.out.println(e.toString());
        }
    }
}


/*
run:

Item Name: BMW XM Label Red	Quantity: 1
Item Name: Desktop PC	Quantity: 2
Item Name: Laptop	Quantity: 3
Total objects created: 3

*/

 

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