EG_2020_4185

TravelCostCalculator.java

@@ -1,3 +1,5 @@
+// Samoda S.M.S.T- EG/2020/4185
+
 import java.io.BufferedReader;
 import java.io.FileReader;
 import java.io.IOException;
@@ -10,66 +12,51 @@ public class TravelCostCalculator {
     static Map<String, Double> b = new HashMap<>();
     static Map<String, Double> c = new HashMap<>();
 
-    static void l1(String file) throws IOException {
-        BufferedReader reader = new BufferedReader(new FileReader(file));
-        String i; 
-        while ((i = reader.readLine()) != null) {
-            String[] p = i.split(",");
-            a.put(p[0].toUpperCase(), Double.parseDouble(p[1]));
-        }
-    }
-
-    static void l2(String file) throws IOException {
+    static void BufferReaderLine2(String file,letter) throws IOException {
         BufferedReader reader = new BufferedReader(new FileReader(file));
-        String i;
-        while ((i = reader.readLine()) != null) {
-            String[] p = i.split(",");
-            b.put(p[0].toUpperCase(), Double.parseDouble(p[1]));
-        }
-    }
-
-    static void l3(String file) throws IOException {
-        BufferedReader reader = new BufferedReader(new FileReader(file));
-        String i;
-        while ((i = reader.readLine()) != null) {
-            String[] p = i.split(",");
-            c.put(p[0].toUpperCase(), Double.parseDouble(p[1]));
+        while ((String line = reader.readLine()) != null) {
+            String[] words = line.split(",");
+            if(letter=='a')
+                a.put(words[0].toUpperCase(), Double.parseDouble(words[1]));
+            else if (letter=='b')
+                b.put(words[0].toUpperCase(), Double.parseDouble(words[1]));
+            else if (letter=='b')
+                c.put(words[0].toUpperCase(), Double.parseDouble(words[1]));
         }
     }
 
     public static void main(String[] args) {
         try {
-            l1("data/hotel_rates.csv");
-            l2("data/exchange_rates.csv");
-            l3("data/flight_costs.csv");
+            BufferReaderLine1("data/hotel_rates.csv",a);
+            BufferReaderLine2("data/exchange_rates.csv",b);
+            BufferReaderLine3("data/flight_costs.csv",c);
 
             BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
 
             System.out.print("Enter your destination: ");
             String destination = reader.readLine().toUpperCase();
 
-            double flight_cost = c.getOrDefault(destination, 0.0);
-            double hotel_cost = a.getOrDefault(destination, 0.0);
+            double flightCost = c.getOrDefault(destination, 0.0);
+            double hotelCost = a.getOrDefault(destination, 0.0);
 
             System.out.print("Enter your stay duration in days: ");
             int stay_duration = Integer.parseInt(reader.readLine());
-            hotel_cost *= stay_duration;
-
-            double total_cost_usd = flight_cost + hotel_cost;
+
+            double totalCostUsd = flightCost + ( hotelCost *= stayDuration);
 
-            System.out.printf("Flight cost: USD %.2f\n", flight_cost);
-            System.out.printf("Hotel cost (%d days): USD %.2f\n", stay_duration, hotel_cost);
-            System.out.printf("Total: USD %.2f\n", total_cost_usd);
+            System.out.printf("Flight cost: USD %.2f\n", flightCost);
+            System.out.printf("Hotel cost (%d days): USD %.2f\n", stayDuration, hotelCost);
+            System.out.printf("Total: USD %.2f\n", totalCostUsd);
 
-            String[] available_currencies = b.keySet().toArray(new String[0]);
-            System.out.print("Select your currency for final price estimation(" + String.join(", ", available_currencies) + "): ");
-            String selected_currency = reader.readLine();
+            String[] availableCurrencies = b.keySet().toArray(new String[0]);
+            System.out.print("Select your currency for final price estimation(" + String.join(", ", availableCurrencies) + "): ");
+            String selectedCurrency = reader.readLine();
 
-            double final_price_local_currency = total_cost_usd * b.get(selected_currency);
+            double finalPriceLocalCurrency = totalCostUsd * b.get(selectedCurrency);
 
-            System.out.printf("Total in %s: %.2f\n", selected_currency, final_price_local_currency);
-        } catch (IOException e) {
-            e.printStackTrace();
+            System.out.printf("Total in %s: %.2f\n", selectedCurrency, finalPriceLocalCurrency);
+        }   catch (IOException e) {
+                e.printStackTrace();
         }
     }
 }