From ff03cf7734720e236dc3909df534810f5a644427 Mon Sep 17 00:00:00 2001 From: Bita Date: Sun, 17 May 2026 14:31:45 +0330 Subject: [PATCH 1/3] Complete class main --- src/.idea/.gitignore | 10 ++++++++++ src/.idea/misc.xml | 6 ++++++ src/.idea/modules.xml | 8 ++++++++ src/.idea/vcs.xml | 6 ++++++ src/main/java/Main.java | 19 +++++++++++-------- 5 files changed, 41 insertions(+), 8 deletions(-) create mode 100644 src/.idea/.gitignore create mode 100644 src/.idea/misc.xml create mode 100644 src/.idea/modules.xml create mode 100644 src/.idea/vcs.xml diff --git a/src/.idea/.gitignore b/src/.idea/.gitignore new file mode 100644 index 0000000..ab1f416 --- /dev/null +++ b/src/.idea/.gitignore @@ -0,0 +1,10 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Ignored default folder with query files +/queries/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml +# Editor-based HTTP Client requests +/httpRequests/ diff --git a/src/.idea/misc.xml b/src/.idea/misc.xml new file mode 100644 index 0000000..a20905f --- /dev/null +++ b/src/.idea/misc.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/src/.idea/modules.xml b/src/.idea/modules.xml new file mode 100644 index 0000000..3d0bbe7 --- /dev/null +++ b/src/.idea/modules.xml @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff --git a/src/.idea/vcs.xml b/src/.idea/vcs.xml new file mode 100644 index 0000000..6c0b863 --- /dev/null +++ b/src/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/src/main/java/Main.java b/src/main/java/Main.java index 148a46e..8117402 100644 --- a/src/main/java/Main.java +++ b/src/main/java/Main.java @@ -13,17 +13,20 @@ public class Main { if (input == null) { throw new IOException("products.csv not found"); } + Scanner scanner = new Scanner(input); - // TODO: - // - Read each line from products.csv - // - For each line, parse productId, name, and price - // - The format of the file is like this: - // [productId],[name],[price] - // - Store Product objects in the productCatalog ArrayList + while (scanner.hasNextLine()) + { + String line = scanner.nextLine(); + String[] parts = line.split(","); + int id = Integer.parseInt(parts[0].trim()); + String name = parts[1].trim(); + Double price = Double.parseDouble(parts[2].trim()); - // NOTE - // - The data in products.csv is guaranteed to be valid. + productCatalog.add(new Product(id, name, price)); + } + scanner.close(); } public static void main(String[] args) From 50723fbed70ca62f992d6347f7d9271fd5908b0f Mon Sep 17 00:00:00 2001 From: Bita Date: Mon, 18 May 2026 20:58:13 +0330 Subject: [PATCH 2/3] Complete class ReportGenerator --- src/main/java/ReportGenerator.java | 137 +++++++++++++++++------------ 1 file changed, 80 insertions(+), 57 deletions(-) diff --git a/src/main/java/ReportGenerator.java b/src/main/java/ReportGenerator.java index 8eb458b..0ed1610 100644 --- a/src/main/java/ReportGenerator.java +++ b/src/main/java/ReportGenerator.java @@ -1,4 +1,10 @@ +import java.io.File; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.PrintWriter; import java.util.List; +import java.util.Scanner; +import java.util.SortedMap; public class ReportGenerator { @@ -17,67 +23,84 @@ public class ReportGenerator { public void processFile() { - // TODO: - // 1. Open the order details CSV file - // 2. Read the file line by line - // 3. Split each line using comma delimiter - // (each line is guaranteed to contain exactly two commas) - // 4. Each line contains exactly 3 values in the format: - // [productId],[quantity],[discountPercent] - // 5. Attempt to convert values: - // - productId -> int - // - quantity -> int - // - discountPercent -> int - // NOTE: - // - quantity and discountPercent may contain invalid characters - // (e.g., letters instead of numbers). - // - If parsing any value fails (NumberFormatException), - // the entire line must be considered invalid. - // - Use try-catch blocks and exception handling to safely - // handle parsing and validation errors without stopping - // the processing of the remaining lines. - // 6. Validate parsed values: - // - productId must be greater than 0 - // - quantity must be greater than 0 - // - discountPercent must be between 0 and 99 inclusive - // 7. Look for a Product in productList that matches productId - // 8. If no Product with that ID exists in the catalog, - // the entire line is considered invalid - // 9. If all values are valid and the product exists, calculate: - // subtotal = quantity * product price - // discountValue = subtotal * discountPercent / 100 - // finalCost = subtotal - discountValue - // 10. Update report totals: - // - totalQuantity += quantity - // - totalFinalCost += finalCost - // - totalDiscountValue += discountValue - // 11. If any parsing error, validation failure, or missing product occurs: - // - increment totalInvalidLines - // - skip the line and continue processing the next line - // 12. Close all file resources + try (Scanner scanner = new Scanner(new File(ordersFilePath))) + { + while (scanner.hasNextLine()) + { + String line = scanner.nextLine(); + String[] parts = line.split(","); + + try + { + int productId = Integer.parseInt(parts[0].trim()); + int quantity = Integer.parseInt(parts[1].trim()); + int discountPercent = Integer.parseInt(parts[2].trim()); + + if (productId <= 0 || discountPercent > 99 || discountPercent < 0 || quantity <= 0) + { + totalInvalidLines++; + continue; + } + + Product product = null; + for (Product p: productList) + { + if (p.getProductID() == productId) + { + product = p; + break; + } + } + + if (product == null) + { + totalInvalidLines++; + continue; + } + else + { + double subtotal = quantity * product.getPrice(); + double discountValue = subtotal * discountPercent / 100; + double finalCost = subtotal - discountValue; + + totalQuantity += quantity; + totalFinalCost += finalCost; + totalDiscountValue += discountValue; + } + } + catch (NumberFormatException e) + { + totalInvalidLines++; + continue; + } + } + } + catch (FileNotFoundException e) + { + System.err.println("Not found"); + return; + } } public void saveReport() { - // TODO: - // 1. Build a formatted report string - // 2. Include: - // - total quantity - // - total final cost - // - total discount value - // - total invalid lines - // 3. Create/open output report file (name it report.txt) - // 4. Write report string into file - // 5. Handle file writing exceptions - // 6. Close writer resources + try + { + PrintWriter writer = new PrintWriter("report.txt"); - /* Example Structure - ========= SALES REPORT ========= - Total Quantity Sold: 42 - Total Final Cost: $1520.75 - Total Discount Value: $230.50 - Invalid Rows: 3 - ================================ - */ + writer.println("========= SALES REPORT ========="); + writer.println("Total Quantity Sold: " + totalQuantity); + writer.println("Total Final Cost: " + totalFinalCost); + writer.println("Total Discount Value: " + totalDiscountValue); + writer.println("Invalid Rows: " + totalInvalidLines); + + writer.close(); + + System.out.println("Report has written successfuly"); + } + catch (IOException e) + { + System.err.println("Failed in writing the report!"); + } } } \ No newline at end of file From 6da56d771e29f3a9dc99d3e6801aa1ab7ed41b2c Mon Sep 17 00:00:00 2001 From: Bita Date: Thu, 21 May 2026 20:04:58 +0330 Subject: [PATCH 3/3] Edit saveReport --- src/main/java/ReportGenerator.java | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/main/java/ReportGenerator.java b/src/main/java/ReportGenerator.java index 0ed1610..c07130f 100644 --- a/src/main/java/ReportGenerator.java +++ b/src/main/java/ReportGenerator.java @@ -88,10 +88,10 @@ public class ReportGenerator { { PrintWriter writer = new PrintWriter("report.txt"); - writer.println("========= SALES REPORT ========="); + writer.println("===== SALES REPORT ====="); writer.println("Total Quantity Sold: " + totalQuantity); - writer.println("Total Final Cost: " + totalFinalCost); - writer.println("Total Discount Value: " + totalDiscountValue); + writer.println("Total Final Cost: " + String.format("%.2f", totalFinalCost)); + writer.println("Total Discount Value: " + String.format("%.2f", totalDiscountValue)); writer.println("Invalid Rows: " + totalInvalidLines); writer.close(); @@ -100,7 +100,7 @@ public class ReportGenerator { } catch (IOException e) { - System.err.println("Failed in writing the report!"); + System.err.println("Failed to write the report!"); } } } \ No newline at end of file