LET'S DEVELOP TOGETHER YOUR SECURED PRODUCT, TEST IT AND OPTIMIZE IT FOR SUCCESS

@Service @Lazy //changes the moment when the bean instance is created ///will not display the actions in postconstruct and predestroy, the context is created and closed //PostConstruct and PreDistroy can also be called directly but this is not compliant to Spring standards //more ofther these methods are marked as private so that they should not …

The java developer can use 2 standard Java annotations to interwine in a bean lifecycle inside a Spring context These annotations are used by ejb, jpa, spring, jsf contexts . @Postconstruct – used for any initialisation In not advisable to give values in a Bean constructor There is a chance that the Postconstructor should not …

@Qualifier @Target(ElementType.FIELD,ElementType.CONSTRUCTOR,ElementType.METHOD,ElementType.TYPE) @Retention(RetentionPolicy.RUNTIME) /*Another way to use @Qualifier is to declare an annotation Target must declare type, method, constructor and field to be succesfuly recognized as annotation The java developer needs to declare retention policy runtime to be detected with by the Java Reflection mecanism this annotation can be used to replace @qualifier(bean name) */ …

Let’s create a package service and define an interface called IMyService This Java interface will contain all the methods that a service can be able to offer In a memory zone such as IMyService (interface) we can add memory zones of type MyServiceA through polymorphism To identify this class the java coder will implement the …

@Qualifier annotation in Spring To exemplify the use of @Qualifier annotation we should define an abstractisation of a bean Often the bean is abstracted and we should represent the bean through abstractisation not through a direct implementation Using a concret type of variable is not advisible to be used to indejected in an instance dependency …