The Spring dependency injection mechanism cannot identify which constructor to use for auto-wiring when multiple constructors are present in a
class. This ambiguity can cause the application to crash at runtime, and it makes the code less clear to understand and more complex to extend and
maintain.
What is the potential impact?
- Incorrect Instantiation: the wrong constructor is selected for instantiation, leading to a bean not being correctly
initialized.
- Unsatisfied Dependency Exception: the constructor selected by Spring requires beans that are not available in the Spring
context.
- Non-Deterministic Behavior: the constructor selected by Spring can vary, based on the number of dependencies that can be
satisfied at runtime, leading to unpredictable application behavior.
- Maintainability Issues: adding more constructors in the future could lead to further confusion and potential bugs.
