Maven Java Lav is completed.

.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

order-data/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.ironhack</groupId>
+        <artifactId>02-maven</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>order-data</artifactId>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>

order-data/src/main/java/com/ironhack/Order.java

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+package com.ironhack;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+public class Order {
+    private final String id;
+    private final String customerId;
+    private final BigDecimal total;
+    private final List<OrderItem> items;
+
+    public Order(String id, String customerId, BigDecimal total, List<OrderItem> items) {
+        validateOrder(id, customerId, total, items);
+        this.id = id;
+        this.customerId = customerId;
+        this.total = total;
+        this.items = items;
+    }
+
+    private void validateOrder(String id, String customerId, BigDecimal total, List<OrderItem> items) {
+        if (id == null) {
+            throw new IllegalArgumentException("ID cannot be null");
+        }
+        if (customerId == null) {
+            throw new IllegalArgumentException("Customer ID cannot be null");
+        }
+        if (total == null) {
+            throw new IllegalArgumentException("Total cannot be null");
+        }
+        if (items == null) {
+            throw new IllegalArgumentException("Order items must be specified");
+        }
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getCustomerId() {
+        return customerId;
+    }
+
+    public BigDecimal getTotal() {
+        return total;
+    }
+
+    public List<OrderItem> getItems() {
+        return items;
+    }
+
+    @Override
+    public String toString() {
+        return "Order{" +
+                "id='" + id + '\'' +
+                ", customerId='" + customerId + '\'' +
+                ", total=" + total +
+                ", items=" + items +
+                '}';
+    }
+}

order-data/src/main/java/com/ironhack/OrderItem.java

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+package com.ironhack;
+
+import java.math.BigDecimal;
+
+public class OrderItem {
+    private final String id;
+    private final String orderId;
+    private final String productId;
+    private final int quantity;
+    private final BigDecimal unitPrice;
+
+    public OrderItem(String id, String orderId, String productId, int quantity, BigDecimal unitPrice) {
+        validateOrderItem(id, orderId, productId, quantity, unitPrice);
+        this.id = id;
+        this.orderId = orderId;
+        this.productId = productId;
+        this.quantity = quantity;
+        this.unitPrice = unitPrice;
+    }
+
+    private void validateOrderItem(String id, String orderId, String productId, int quantity, BigDecimal unitPrice) {
+        if (id == null) {
+            throw new IllegalArgumentException("ID cannot be null");
+        }
+        if (orderId == null) {
+            throw new IllegalArgumentException("Order ID cannot be null");
+        }
+        if (productId == null) {
+            throw new IllegalArgumentException("Product ID cannot be null");
+        }
+        if (quantity < 0) {
+            throw new IllegalArgumentException("Quantity cannot be negative");
+        }
+        if (unitPrice == null) {
+            throw new IllegalArgumentException("Unit Price cannot be null");
+        }
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getOrderId() {
+        return orderId;
+    }
+
+    public String getProductId() {
+        return productId;
+    }
+
+    public int getQuantity() {
+        return quantity;
+    }
+
+    public BigDecimal getUnitPrice() {
+        return unitPrice;
+    }
+
+    @Override
+    public String toString() {
+        return "OrderItem{" +
+                "id='" + id + '\'' +
+                ", orderId='" + orderId + '\'' +
+                ", productId='" + productId + '\'' +
+                ", quantity=" + quantity +
+                ", unitPrice=" + unitPrice +
+                '}';
+    }
+}

order-data/src/main/java/com/ironhack/OrderProcessor.java

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+package com.ironhack;
+
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
+
+import java.lang.reflect.Type;
+import java.util.List;
+
+public class OrderProcessor {
+    private static final Gson GSON = new Gson();
+
+    public static void main(String[] args) {
+        String ordersJson = """
+        [
+          {
+            "id": "order-1001",
+            "customerId": "customer-501",
+            "total": 259.98,
+            "items": [
+              {
+                "id": "item-1",
+                "orderId": "order-1001",
+                "productId": "product-2001",
+                "quantity": 2,
+                "unitPrice": 49.99
+              },
+              {
+                "id": "item-2",
+                "orderId": "order-1001",
+                "productId": "product-2002",
+                "quantity": 1,
+                "unitPrice": 159.99
+              }
+            ]
+          },
+          {
+            "id": "order-1002",
+            "customerId": "customer-777",
+            "total": 89.97,
+            "items": [
+              {
+                "id": "item-3",
+                "orderId": "order-1002",
+                "productId": "product-3001",
+                "quantity": 3,
+                "unitPrice": 29.99
+              }
+            ]
+          }
+        ]
+        """;
+        List<Order> orders = processData(ordersJson);
+        logOrders(orders);
+    }
+
+    public static List<Order> processData(String ordersJson) {
+        Type listType = new TypeToken<List<Order>>() {}.getType();
+
+        return GSON.fromJson(ordersJson, listType);
+    }
+
+    private static void logOrders(List<Order> orders) {
+        for (Order order : orders) {
+            System.out.println(order);
+        }
+    }
+}

order-logic/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.ironhack</groupId>
+        <artifactId>02-maven</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>order-logic</artifactId>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.ironhack</groupId>
+            <artifactId>order-data</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>