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okay, let's dive deep into debugging in intellij idea using step actions. this will be a comprehensive guide with explanations, examples, and best practices.

*what is debugging?*

debugging is the process of identifying and resolving errors (bugs) in computer programs. it's a crucial part of software development. a debugger is a tool that allows you to step through your code line by line, inspect variables, and understand the flow of execution. intellij idea has a powerful and feature-rich debugger that makes this process much easier.

*why use step actions?*

step actions (step over, step into, step out, etc.) are the fundamental commands that let you control the execution of your code during a debugging session. they allow you to precisely observe what's happening at each step, making it easier to pinpoint the source of errors.

*setting up your environment*

1. *install intellij idea:* make sure you have intellij idea installed. the community edition is sufficient for most debugging needs. you can download it from the jetbrains website: [https://www.jetbrains.com/idea/](https://www.jetbrains.com/idea/)

2. *create a project:* create a new java project in intellij idea. you can choose any type of project (console application, web application, etc.). for this tutorial, we'll keep it simple with a console application.

3. *write some code:* create a java class (e.g., `main.java`) with some code that we can use for debugging. here's a sample:



*setting breakpoints*

breakpoints are markers that tell the debugger to pause execution at a specific line of code. to set a breakpoint:

1. click in the gutter (the area to the left of the line numbers) next to the line of code where you want to pause execution. a red circle will appear, indicating a breakpoint.

let's set breakpoints on the following lines in our example:

`int sum = add(a, b);`
`return result;` (inside the `add` method)
`string fullmessage = greeting + ", " + name + "!"; ...

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Debugging
IntelliJ IDEA
breakpoints
step over
step into
step out
evaluate expression
run to cursor
watches
call stack
variables view
debug console
conditional breakpoints
remote debugging
debugging tools