[BAEL-12114] - Upgraded MapStruct article

mapstruct/src/main/java/com/baeldung/dto/CarDTO.java

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+package com.baeldung.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class CarDTO {
+    private int id;
+    private String name;
+}

mapstruct/src/main/java/com/baeldung/dto/PersonDTO.java

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+package com.baeldung.dto;
+
+public class PersonDTO {
+    
+    private String id;
+    private String name;
+
+    public PersonDTO() {
+
+    }
+
+    public PersonDTO(String id, String name) {
+        super();
+        this.id = id;
+        this.name = name;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

mapstruct/src/main/java/com/baeldung/entity/Car.java

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+package com.baeldung.entity;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class Car {
+    private int id;
+    private String name;
+}

mapstruct/src/main/java/com/baeldung/entity/Person.java

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+package com.baeldung.entity;
+
+public class Person {
+    
+    private String id;
+    private String name;
+    
+    public Person() {
+        
+    }
+    
+    public Person(String id, String name) {
+        super();
+        this.id = id;
+        this.name = name;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

mapstruct/src/main/java/com/baeldung/mapper/CarMapper.java

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+package com.baeldung.mapper;
+
+import org.mapstruct.Mapper;
+import org.mapstruct.factory.Mappers;
+
+import com.baeldung.dto.CarDTO;
+import com.baeldung.entity.Car;
+
+@Mapper
+public interface CarMapper {
+    
+    CarMapper INSTANCE = Mappers.getMapper(CarMapper.class);
+    
+    CarDTO carToCarDTO(Car car);
+}

mapstruct/src/main/java/com/baeldung/mapper/PersonMapper.java

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+package com.baeldung.mapper;
+
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.factory.Mappers;
+
+import com.baeldung.dto.PersonDTO;
+import com.baeldung.entity.Person;
+
+@Mapper
+public interface PersonMapper {
+    
+    PersonMapper INSTANCE = Mappers.getMapper(PersonMapper.class);
+    
+    @Mapping(target = "id", source = "person.id", defaultExpression = "java(java.util.UUID.randomUUID().toString())")
+    PersonDTO personToPersonDTO(Person person);
+}