Basic Configuration Guide for Linux Java Development with IntelliJ IDEA

Basic configuration guide for Linux Java development using IntelliJ IDEA

Introduction:
IntelliJ IDEA is a popular Java integrated development environment (IDE). Its powerful functions and friendly user interface make Developers can write and debug Java code more efficiently. This article will introduce how to perform basic configuration of IntelliJ IDEA under the Linux operating system in order to develop Java projects.

1. Install IntelliJ IDEA
First, we need to install IntelliJ IDEA on the Linux system. The latest version of IntelliJ IDEA can be downloaded and installed from the official website with the following command:

sudo snap install intellij-idea-community --classic

After the installation is complete, IntelliJ IDEA can be found in the application menu or launcher.

2. Create a new project
After starting IntelliJ IDEA, we need to create a new Java project. Please follow these steps:

1. Select the "Create New Project" option.
2. In the "New Project" dialog box, select "Java" as the project type and click "Next".
3. Select the installed Java Development Kit (JDK) in "Project SDK".
4. Enter the project name and project path, and click "Finish".

3. Configure Java development environment
After creating a new project, we need to configure the Java development environment.

1. Open the "Settings" dialog box and select the "Compiler" option under "Build, Execution, Deployment".
2. In the "Java Compiler" section, select the correct Java version and click "OK" to save the configuration.

4. Configure the version control system
IntelliJ IDEA supports multiple version control systems, such as Git, Subversion, etc. We can integrate the required version control system in the project.

1. Open the "Settings" dialog box and select the "Version Control" option.
2. Select the version control system you want to use and configure it accordingly. For example, if you selected Git, enter the Git executable path and username.
3. Click "OK" to save the configuration.

5. Import an existing project
If you already have an existing Java project and need to develop it in IntelliJ IDEA, you can import the project through the following steps:

1. Select the "Import Project" option on the welcome screen of IntelliJ IDEA.
2. In the "Import Project" dialog box, select the root directory of the project and select the appropriate build tool (such as Maven or Gradle).
3. Click "OK" to import the project.

6. Debugging Java Code
IntelliJ IDEA provides powerful debugging functions that can help us quickly locate and solve problems.

1. Select the Java class you want to debug in the code editor and set a breakpoint in the left sidebar.
2. Click the "Debug" button to start a debugging session.
3. In a debugging session, you can use various debugging features, such as single-stepping, viewing the values ​​of variables and expressions, etc.

7. Using code examples
The following is a simple Java code example to demonstrate how to use IntelliJ IDEA for development and debugging:

public class HelloWorld {
    public static void main(String[] args) {
        String message = "Hello, World!";
        System.out.println(message);
    }
}

In IntelliJ IDEA, you can follow The following steps use this sample code:

1. Create a new Java class file and copy and paste the above code into it.
2. Ensure that the Java development environment and version control system have been configured correctly.
3. Click the "Run" button to execute the code.
4. You can see the output results in the console.

Conclusion:
Through this article, we learned how to perform basic configuration of IntelliJ IDEA under the Linux operating system, as well as how to create new projects, configure the Java development environment, and import existing projects and debugging Java code. I hope these operation guides can help you use IntelliJ IDEA for Java development more efficiently.

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