Which Java Object-to-Object Mapping Tool Is Right for My Project?

Java Object to Object Mapping Tools

Automating the conversion of domain objects (DOs) to data transfer objects (DTOs) in Java can be a daunting task. Fortunately, there are numerous tools available to streamline this process.

Recommended Libraries

• Dozer: Recursively copies data between complex Java Bean types.
• ModelMapper: Intelligent mapper that automatically maps objects based on conventions.
• MapStruct: Compile-time code generator that creates dependency-less, type-safe mapping code.
• Orika: Uses byte code generation for fast, overhead-minimized mapping.
• Selma: Compile-time code generator for mappings.

Other Libraries

While not as widely used, these additional libraries may provide specific mapping capabilities:

• Commons-BeanUtils: Converts scalar values to/from objects.
• Spring Framework: Supports PropertyEditors for transforming objects to/from strings.
• Commons-Lang: Provides array manipulation utilities.
• EzMorph: Transforms objects with multidimensional arrays and DynaBeans.
• Lorentz: Generic object-to-object conversion framework.
• OTOM: Copies data between any Java objects.

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