defat: code structure

Signed-off-by: Otavio Santana <otaviopolianasantana@gmail.com>

Author: otaviojava

02-01-code-design-principle/src/main/java/expert/os/examples/App.java

@@ -3,11 +3,18 @@
 import jakarta.enterprise.inject.se.SeContainer;
 import jakarta.enterprise.inject.se.SeContainerInitializer;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class App {
 
     public static void main(String[] args) {
         try(SeContainer container = SeContainerInitializer.newInstance().initialize()) {
-
+            Team team = new Team();
+            team.add("Alice");
+            team.add("Bob");
+            team.add("Charlie");
+            team.getMembers().clear();
         }
     }
 }

02-01-code-design-principle/src/main/java/expert/os/examples/Checkout.java

@@ -0,0 +1,14 @@
+package expert.os.examples;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+public class Checkout {
+
+    private List<Product> products;
+
+
+    public BigDecimal getTotal() {
+
+    }
+}

02-01-code-design-principle/src/main/java/expert/os/examples/Cities.java

@@ -0,0 +1,26 @@
+package expert.os.examples;
+
+import java.util.function.Supplier;
+
+public enum Cities implements Supplier<String> {
+    NEW_YORK("New York"),
+    LOS_ANGELES("Los Angeles"),
+    CHICAGO("Chicago"),
+    HOUSTON("Houston"),
+    PHOENIX("Phoenix");
+
+    private final String cityName;
+
+    Cities(String cityName) {
+        this.cityName = cityName;
+    }
+
+    public String getCityName() {
+        return cityName;
+    }
+
+    @Override
+    public String get() {
+        return cityName;
+    }
+}

02-01-code-design-principle/src/main/java/expert/os/examples/Operation.java

@@ -0,0 +1,27 @@
+package expert.os.examples;
+
+public enum Operation {
+    SUM {
+        @Override
+        double execute(double a, double b) {
+            return 0;
+        }
+    }, SUBTRACT {
+        @Override
+        double execute(double a, double b) {
+            return 0;
+        }
+    }, MULTIPLY {;
+        @Override
+        double execute(double a, double b) {
+            return 0;
+        }
+    }, DIVIDE {
+        @Override
+        double execute(double a, double b) {
+            return 0;
+        }
+    };
+
+    abstract double execute(double a, double b);
+}

02-01-code-design-principle/src/main/java/expert/os/examples/Player.java

@@ -0,0 +1,14 @@
+package expert.os.examples;
+
+public class Player {
+
+    //auto generated
+    private Long id;
+
+    private final String name;
+
+
+    public Player(String name) {
+        this.name = name;
+    }
+}

02-01-code-design-principle/src/main/java/expert/os/examples/Product.java

@@ -0,0 +1,11 @@
+package expert.os.examples;
+
+import javax.money.MonetaryAmount;
+import java.math.BigDecimal;
+
+public class Product {
+
+private MonetaryAmount price;
+
+private Email email;
+}

02-01-code-design-principle/src/main/java/expert/os/examples/Team.java

@@ -0,0 +1,21 @@
+package expert.os.examples;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+public class Team {
+
+    private List<String> members = new ArrayList<>();
+
+    public void add(String member) {
+        Objects.requireNonNull(member, "Member cannot be null");
+        this.members.add(member);
+    }
+
+    public List<String> getMembers() {
+        return Collections.unmodifiableList(members);
+    }
+
+}

02-01-code-design-principle/src/main/java/expert/os/examples/User.java

@@ -0,0 +1,15 @@
+package expert.os.examples;
+
+import java.util.UUID;
+
+public class User {
+
+    private UUID id;
+
+    private String nickname;
+
+    private String password;
+
+    private String email;
+
+}

02-01-code-design-principle/src/main/java/expert/os/examples/UserDTO.java

@@ -0,0 +1,11 @@
+package expert.os.examples;
+
+import java.util.UUID;
+
+public class UserDTO {
+
+    private UUID id;
+
+    private String nickname;
+
+}

02-01-code-design-principle/src/main/java/expert/os/examples/payment/PaymentController.java

@@ -0,0 +1,4 @@
+package expert.os.examples.payment;
+
+public class PaymentController {
+}