Baeldung Pro comes with both absolutely No-Ads as well as finally with Dark Mode, for a clean learning experience:
Once the early-adopter seats are all used, the price will go up and stay at $33/year.
Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.
Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.
To learn more about Java features on Azure Container Apps, visit the documentation page.
You can also ask questions and leave feedback on the Azure Container Apps GitHub page.
Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.
Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.
To learn more about Java features on Azure Container Apps, you can get started over on the documentation page.
And, you can also ask questions and leave feedback on the Azure Container Apps GitHub page.
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Mocking is an essential part of unit testing, and the Mockito library makes it easy to write clean and intuitive unit tests for your Java code.
Get started with mocking and improve your application tests using our Mockito guide:
Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
Get started with understanding multi-threaded applications with our Java Concurrency guide:
Spring 5 added support for reactive programming with the Spring WebFlux module, which has been improved upon ever since. Get started with the Reactor project basics and reactive programming in Spring Boot:
Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.
But these can also be overused and fall into some common pitfalls.
To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:
Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:
Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.
I built the security material as two full courses - Core and OAuth, to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project.
You can explore the course here:
All Access is finally out, with all of my Spring courses. Learn JUnit is out as well, and Learn Maven is coming fast. And, of course, quite a bit more affordable. Finally.
>> GET THE COURSE
Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot.
Get started with Spring Data JPA through the guided reference course:
End-to-end testing is a very useful method to make sure that your application works as intended. This highlights issues in the overall functionality of the software, that the unit and integration test stages may miss.
Playwright is an easy-to-use, but powerful tool that automates end-to-end testing, and supports all modern browsers and platforms.
When coupled with LambdaTest (an AI-powered cloud-based test execution platform) it can be further scaled to run the Playwright scripts in parallel across 3000+ browser and device combinations:
Yes, we're now running our Spring Sale. All Courses are 25% off until 26th May, 2025:
Yes, we're now running our Spring Sale. All Courses are 25% off until 26th May, 2025:
1. Overview
This cookbook shows how to use Mockito to configure behavior in a variety of examples and use cases.
The format of the cookbook is example focused and practical — no extraneous details and explanations are necessary.
And of course, if you want to learn more about testing well with Mockito, have a look at the other Mockito articles here.
Further reading:
Mockito Verify Cookbook
<strong>Mockito Verify</strong> examples, usage and best practices.
Mockito – Using Spies
Making good use of Spies in Mockito, and how spies are different from mocks.
Mockito's Mock Methods
This tutorial illustrates various uses of the standard static mock methods of the Mockito API.
We’re going to be mocking a simple list implementation, which is the same implementation we used in the previous cookbook:
public class MyList extends AbstractList<String> {
@Override
public String get(final int index) {
return null;
}
@Override
public int size() {
return 1;
}
}
2. The Cookbook
Configure simple return behavior for mock:
MyList listMock = mock(MyList.class);
when(listMock.add(anyString())).thenReturn(false);
boolean added = listMock.add(randomAlphabetic(6));
assertThat(added).isFalse();Configure return behavior for mock in an alternative way:
MyList listMock = mock(MyList.class);
doReturn(false).when(listMock).add(anyString());
boolean added = listMock.add(randomAlphabetic(6));
assertThat(added).isFalse();Configure mock to throw an exception on a method call:
MyList listMock = mock(MyList.class);
when(listMock.add(anyString())).thenThrow(IllegalStateException.class);
assertThrows(IllegalStateException.class, () -> listMock.add(randomAlphabetic(6)));Configure the behavior of a method with void return type — to throw an exception:
MyList listMock = mock(MyList.class);
doThrow(NullPointerException.class).when(listMock).clear();
assertThrows(NullPointerException.class, () -> listMock.clear());
Configure the behavior of multiple calls:
MyList listMock = mock(MyList.class);
when(listMock.add(anyString()))
.thenReturn(false)
.thenThrow(IllegalStateException.class);
assertThrows(IllegalStateException.class, () -> {
listMock.add(randomAlphabetic(6));
listMock.add(randomAlphabetic(6));
});Configure the behavior of a spy:
MyList instance = new MyList();
MyList spy = spy(instance);
doThrow(NullPointerException.class).when(spy).size();
assertThrows(NullPointerException.class, () -> spy.size());Configure method to call the real, underlying method on a mock:
MyList listMock = mock(MyList.class);
when(listMock.size()).thenCallRealMethod();
assertThat(listMock).hasSize(1);Configure mock method call with custom Answer:
MyList listMock = mock(MyList.class);
doAnswer(invocation -> "Always the same").when(listMock).get(anyInt());
String element = listMock.get(1);
assertThat(element).isEqualTo("Always the same");3. Conclusion
The goal of this guide is to have this information readily available online. I’ve published a few similar development cookbooks on Google Guava and Hamcrest and now Mockito.
The code backing this article is available on GitHub. Once you're logged in as a Baeldung Pro Member, start learning and coding on the project.
