update,

_resources/it114105/itp3914/Lab12/Ex4/Coffee.java

@@ -0,0 +1,25 @@
+public class Coffee extends Drink{
+    boolean isSweet;
+    Coffee(String name, int price, int volume, boolean isSweet){
+        super(name, price, volume);
+        this.isSweet = isSweet;
+    }
+
+    @Override
+    public void setPrice(int price) {
+        // TODO Auto-generated method stub
+        if(price < 10)
+            super.setPrice(10);
+        else
+            super.setPrice(price);
+    }
+
+    @Override
+    public String toString() {
+        // TODO Auto-generated method stub
+        String sweetStr = "sweet";
+        if(!isSweet)
+            sweetStr = "not sweet";
+        return super.toString() + ", " + sweetStr;
+    }
+}