Assertions using Supplier interface

In this post under JUnit 5, I will show with example, the new version of assert method which takes a Supplier interface implementation as an argument. In previous versions of JUnit, we have seen variety of assert methods, which takes the below arguments.1) The expected value (optional)2) The actual value (required)3) String message when the…… Continue reading Assertions using Supplier interface

Configuring Recovery Callback (using annotations)

In this post under Spring Retry, I will show with example how to configure a Recovery callback using annotations. Spring Retry retries fail operations for fixed number of times. If the operations fails even after last attempt, we don’t have any other option but to recover from that failure. Spring Retry provides an annotation that…… Continue reading Configuring Recovery Callback (using annotations)

Configuring exceptions to exclude from retry (using annotations)

In the previous post under Spring Retry, I showed with example how to specify the exceptions through annotation, for which a annotated operation has to be retried. In this post, I will show with example how to mention the exceptions through annotation, that when thrown by a annotated operation, Spring retry shouldn’t retry that operation.…… Continue reading Configuring exceptions to exclude from retry (using annotations)

Configuring Exceptions to include for retry (using annotations)

In this post under Spring Retry, I will show with example how to configure the exceptions for which retry has to happen. For the example I will use the below service class. Service8 1 import org.springframework.retry.annotation.Retryable; 2 import org.springframework.stereotype.Service; 3 4 @Service 5 public class Service8 { 6 private int i = 0; 7 8…… Continue reading Configuring Exceptions to include for retry (using annotations)

Configuring RetryListener (using annotations)

In this post under Spring Retry, I will show with example how to configure RetryListener using annotations. For our example we will need the below “CustomRetryListener2” class CustomRetryListener2 import org.springframework.retry.RetryCallback; import org.springframework.retry.RetryContext; import org.springframework.retry.RetryListener; import org.springframework.stereotype.Component; @Component public class CustomRetryListener2 implements RetryListener { @Override public <T, E extends Throwable> void close(RetryContext arg0, RetryCallback<T, E> arg1,…… Continue reading Configuring RetryListener (using annotations)

Getting all html elements in a document

In this post under Jsoup, I will show with example how to get a list of all html elements in a document. Below is the main class Main Class 1 import java.io.File; 2 import java.io.IOException; 3 import java.util.Iterator; 4 5 import org.jsoup.Jsoup; 6 import org.jsoup.nodes.Document; 7 import org.jsoup.nodes.Element; 8 import org.jsoup.select.Elements; 9 10 public class…… Continue reading Getting all html elements in a document

Spring Retry traversingCauses example (using RetryTemplateBuilder)

In my previous post under Spring Retry, I showed with example how to retry failed operations only for specific exceptions. So for example if we configure Spring Retry (as shown in the below code) to retry only when NullPointerException is thrown Code snippet 1 RetryTemplateBuilder retryTemplateBuilder = RetryTemplate.builder(); retryTemplateBuilder.retryOn(NullPointerException.class) Spring Retry will retry the failed…… Continue reading Spring Retry traversingCauses example (using RetryTemplateBuilder)