update,

it114105/itp3914/Lab12/Ex4/Ex4.java

@@ -0,0 +1,11 @@
+public class Ex4 {
+	public static void main(String [] args) {
+		Food f = new Food("Rice", 3);
+		Drink d = new Drink("Pepsi", 7, 250);
+		Coffee c = new Coffee("Cappuccino", 13, 200, true);
+ 
+		System.out.println(f);
+		System.out.println(d);
+		System.out.println(c);
+	}
+}