<ul><li>An empty string in Java is a string with an intentional blank value, while null denotes the absence of an object.</li><li>Converting empty strings to null can reduce ambiguity when the empty string does not have a meaningful distinction.</li><li>The example demonstrates using MapStruct to convert empty strings to null.</li><li>Different approaches are shown, such as using default methods, conditions, expressions, qualifiedByName, and qualifiedBy.</li><li>Mapper interfaces are created to handle the conversion logic.</li><li>Generated mapper implementation classes show how the mapping is performed based on the defined logic.</li><li>Tests are provided to ensure that empty strings are correctly converted to null using the implemented mappers.</li><li>Various mapper types cater to different scenarios, such as applying conditions, expressions, or custom methods for conversion.</li><li>The conclusion highlights the different approaches and when to use each method based on the requirements.</li><li>Overall, MapStruct provides flexibility in converting empty strings to null, enhancing data handling capabilities.</li></ul>

Map an Empty String to Null Using MapStruct Example

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