Dependency injection java
import java.util.List; // Data Access Object public interface NewsDao { List findAll(); // List type contains generic News class News findOne(int id); }
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Dependency injection java
import java.util.List; // Controller public class NewsController { // Internal reference to the service used by this client private NewsServices newsServices; public NewsController(NewsServices newsServices){ // Constructor injection this.newsServices = newsServices; } // Injected Methods public List getAll() { return newsServices.findAll(); } public News getOne(int id){ return newsServices.findOne(id); } }
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Dependency injection java
// Entity public class News { private int id; private String title; private String description; private boolean deleted; public News(String title,String description){ this.title = title; this.description = description; } // getter setter etc }
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dependency injection
Dependency injection is basically providing the objects that an object needs (its dependencies) instead of having it construct them itself. It's a very useful technique for testing, since it allows dependencies to be mocked or stubbed out.
Source: stackoverflow.com
dependency injection
Class A Class B if A uses some methods of B then its a dependency injection