Master Advanced Debugging With Intellij Idea Step By Tutorial

Learn how to debug code effectively using IntelliJ IDEA. This comprehensive tutorial guides you through advanced debugging techniques to help you identify and fix issues in your code. Explore powerful debugging tools and streamline your debugging process.

• This tutorial focuses on debugging code with IntelliJ IDEA like a pro, demonstrating advanced debugging techniques.
• It shows how to set up debugging sessions and use powerful debugging tools in IntelliJ IDEA.
• The example project used for debugging involves a simple student management system with bugs to demonstrate debugging techniques.

In this comprehensive tutorial, we will delve into the world of advanced code debugging using IntelliJ IDEA. We'll provide step-by-step guidance, helping you master debugging techniques and unleash the full potential of this powerful Integrated Development Environment (IDE).

The sample project we'll be using involves a simple student management system, deliberately containing bugs to serve as the perfect debugging scenario. Whether you're a seasoned developer or just getting started, this tutorial is your guide to debugging like a pro.

Debugging with IntelliJ IDEA Getting Started

Before we dive into advanced debugging techniques, let's get acquainted with the process of setting up debugging sessions within IntelliJ IDEA.

1. Starting a Debug Session

   • You can initiate a debug session by navigating to the "View" menu, selecting "Tool Window," and choosing "Debug."
   • Alternatively, you can run your application in debug mode by clicking on the run icon or right-clicking the class name and selecting "Debug."

2. Customizing Your Debugging Environment

   • To ensure consistency with this tutorial, enable the new UI beta and compact mode in IntelliJ IDEA's settings. This helps maintain a uniform look and feel during your debugging sessions.

3. Configuring Debugging Sessions

   • You can configure debugging sessions by creating a run configuration. This step involves selecting your main class and defining other necessary parameters.

Understanding Breakpoints

Before we proceed, it's essential to understand the concept of breakpoints, which are crucial for effective debugging.

4. Setting Breakpoints

   • Breakpoints are markers you place in your code to pause program execution when reached. You can set breakpoints by clicking on line numbers. It's important to set breakpoints on executable code.

5. The Role of Breakpoints

   • Breakpoints allow you to halt program execution at specific points in your code, giving you the opportunity to inspect variables and identify issues step by step.

Debugging a Sample Project

Let's apply our knowledge to the sample student management system, which contains intentional bugs.

6. The Sample Project

   • The project involves a student management system, including student objects, a student service, a student DAO, and a student validator.

7. Debugging the Code

   • We'll start debugging by adding breakpoints in our code at relevant locations. For instance, we'll set breakpoints in the student controller, service, and validator.

8. Initiating Debugging

   • When we send a request to our API, IntelliJ IDEA's debugging tools will interrupt program execution when breakpoints are hit, allowing us to inspect variables and troubleshoot issues.

9. Examining Variables

   • Debugging sessions in IntelliJ IDEA provide access to variables within the code. You can navigate through variables, inspect their values, and identify any inconsistencies or unexpected behavior.

10. Understanding Exception Stack

    • The exception stack helps you trace the origins of errors, starting from where the exception occurred and moving upwards through the code hierarchy.

11. Managing Breakpoints

    • IntelliJ IDEA's debugging interface offers tools to manage breakpoints, enabling you to enable or disable them as needed. Muting breakpoints can be especially useful in complex debugging scenarios.

Conclusion

Debugging is an essential skill for any programmer. With this tutorial, you've learned how to leverage IntelliJ IDEA's advanced debugging capabilities to streamline the debugging process and become a more proficient developer. Whether you're working on a student management system or any other project, these debugging techniques will help you identify and fix issues efficiently.

All rights reserved. Unauthorized reproduction, in whole or in part is strictly prohibited.