learnit-codeit

@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
    return new PersistenceExceptionTranslationPostProcessor();
}

learnit-codeit

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Component
public @interface Repository {

	/**
	 * The value may indicate a suggestion for a logical component name,
	 * to be turned into a Spring bean in case of an autodetected component.
	 * @return the suggested component name, if any (or empty String otherwise)

learnit-codeit

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Component
public @interface Service {

	/**
	 * The value may indicate a suggestion for a logical component name,
	 * to be turned into a Spring bean in case of an autodetected component.
	 * @return the suggested component name, if any (or empty String otherwise)

learnit-codeit

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Indexed
public @interface Component {

	/**
	 * The value may indicate a suggestion for a logical component name,
	 * to be turned into a Spring bean in case of an autodetected component.
	 * @return the suggested component name, if any (or empty String otherwise)

learnit-codeit

@Component
public class MyComponent {
	/**
	 * Can able to directly mention the value inside @Value annotation
	 */
	@Value("Hello Sample")
	private String sampleValue;
	
	/**
	 * the value for the property lici.value read from the application.properties file

learnit-codeit

lici.value=Hello Sample
lici.myproperty = Hello My Property
lici.array = First,Second,Third
lici.myrank = 4
lici.underscore.values=A_B_C
lici.kevin.details={name: 'ajin', age: '23', country: 'india'}

learnit-codeit

@Lazy
@Component
public class LazyClass {
	public LazyClass() {
		System.out.println(">>>>>>>>>LazyClass Initialized<<<<<<<<<<<");
	}
	
	public void hello() {
		System.out.println("Hello....");

learnit-codeit

@Lazy
@Component
public class LazyClass {
	public LazyClass() {
		System.out.println(">>>>>>>>>LazyClass Initialized<<<<<<<<<<<");
	}
}

learnit-codeit

@Lazy
@Configuration
public class MyLazyConfiguration {
	@Bean
	public NormalClass normalClass() {
		return new NormalClass();
	}
	
	@Bean
	public LazyClass lazyClass() {

learnit-codeit

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.4.4)

2021-04-20 13:21:12.178  INFO 18520 --- [           main] c.lici.spring.SpringExamplesApplication  : Starting SpringExamplesApplication using Java 15 on LAPTOP-13R0SDGH with PID 18520 (C:\Programming\Workspace\LearnIt_CodeIT\spring-examples\target\classes started by anish in C:\Programming\Workspace\LearnIt_CodeIT\spring-examples)
2021-04-20 13:21:12.180  INFO 18520 --- [           main] c.lici.spring.SpringExamplesApplication  : No active profile set, falling back to default profiles: default