Refactoring code in com.baeldung.modelmapper package

java-collections-conversions-2/src/main/java/com/baeldung/modelmapper/MapperUtil.java

@@ -1,39 +1,27 @@
 package com.baeldung.modelmapper;
 
 import org.modelmapper.ModelMapper;
-import org.modelmapper.convention.MatchingStrategies;
 
 import java.util.ArrayList;
 import java.util.List;
 
 /**
  * This is a helper class that contains methods for generic mapping of the users list.
- * Initially, an instance of ModelMapper was created. In the static block we set the matching configuration to STRICT.
+ * Initially, an instance of ModelMapper was created.
  *
  * @author Sasa Milenkovic
  */
 public class MapperUtil {
 
-
     private static ModelMapper modelMapper = new ModelMapper();
 
 
-    static {
-
-        modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
-
-    }
-
     private MapperUtil() {
 
 
     }
 
-    public static <S, T> T mapTo(final S source, final Class<T> target) {
-        return modelMapper.map(source, target);
-    }
-
-    public static <S, T> List<T> mapList(final List<S> sourceList, final Class<T> target) {
+    public static <S, T> List<T> mapList(List<S> sourceList, Class<T> target) {
         List<T> targetList = new ArrayList<T>();
 
         for (S source : sourceList) {

java-collections-conversions-2/src/main/java/com/baeldung/modelmapper/User.java

@@ -8,7 +8,7 @@ package com.baeldung.modelmapper;
 public class User {
 
     private String userId;
-    private String userName;
+    private String username;
     private String email;
     private String contactNumber;
     private String userType;
@@ -18,9 +18,9 @@ public class User {
     public User() {
     }
 
-    public User(String userId, String userName, String email, String contactNumber, String userType) {
+    public User(String userId, String username, String email, String contactNumber, String userType) {
         this.userId = userId;
-        this.userName = userName;
+        this.username = username;
         this.email = email;
         this.contactNumber = contactNumber;
         this.userType = userType;
@@ -34,12 +34,12 @@ public class User {
         this.userId = userId;
     }
 
-    public String getUserName() {
-        return userName;
+    public String getUsername() {
+        return username;
     }
 
-    public void setUserName(String userName) {
-        this.userName = userName;
+    public void setUsername(String userName) {
+        this.username = userName;
     }
 
     public String getEmail() {

java-collections-conversions-2/src/main/java/com/baeldung/modelmapper/UserDTO.java

@@ -8,7 +8,7 @@ package com.baeldung.modelmapper;
 public class UserDTO {
 
     private String userId;
-    private String userName;
+    private String username;
     private String email;
 
     // getters and setters
@@ -21,12 +21,12 @@ public class UserDTO {
         this.userId = userId;
     }
 
-    public String getUserName() {
-        return userName;
+    public String getUsername() {
+        return username;
     }
 
-    public void setUserName(String userName) {
-        this.userName = userName;
+    public void setUsername(String username) {
+        this.username = username;
     }
 
     public String getEmail() {

java-collections-conversions-2/src/main/java/com/baeldung/modelmapper/UserPropertyMap.java

@@ -18,14 +18,15 @@ public class UserPropertyMap extends PropertyMap<UserList, UserListDTO> {
 
     Converter<List<User>, List<String>> converter = new AbstractConverter<List<User>, List<String>>() {
 
-        List<String> usernames = new ArrayList<>();
+        protected List<String> usernames;
 
+        @Override
         protected List<String> convert(List<User> users) {
 
-            users.forEach(user -> usernames.add(user.getUserName()));
+            usernames = new ArrayList<String>();
+            users.forEach(user -> usernames.add(user.getUsername()));
             return usernames;
         }
-
     };
 
     @Override