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NetBeans for Java还值得新手入门学习吗?

Of course! Here is a comprehensive guide to using NetBeans for Java development, covering its features, pros and cons, and a step-by-step tutorial to get you started.

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What is NetBeans?

NetBeans is a free, open-source, Integrated Development Environment (IDE) primarily used for Java development. It's one of the "big three" Java IDEs, alongside IntelliJ IDEA and Eclipse. NetBeans is developed by the Apache Software Foundation and is known for its simplicity, robust features, and excellent built-in support for JavaFX, Maven, and web technologies.

It's officially supported on Windows, macOS, and Linux.


Key Features of NetBeans for Java

NetBeans packs a lot of power directly out of the box, which is one of its biggest strengths.

Excellent Java Support

  • Code Completion (IntelliSense): As you type, NetBeans suggests classes, methods, and variables.
  • Smart Code Editor: Features like syntax highlighting, code folding, and error highlighting make code easier to read and write.
  • Refactoring Tools: Easily rename variables, extract methods, and change method signatures without breaking your code.
  • Debugger: A powerful debugger that allows you to set breakpoints, step through your code line by line, inspect variables, and watch expressions.
  • Visual GUI Builder: This is NetBeans' crown jewel. You can drag and drop Swing components (buttons, text fields, labels, etc.) to create graphical user interfaces visually. The underlying Java code is generated for you automatically.

Built-in Project Management

  • Maven and Gradle Support: It has first-class, integrated support for Maven and Gradle, the most popular build tools in the Java ecosystem. You can create, manage, and build projects without ever leaving the IDE.
  • Ant Support: It also has strong support for the older Ant build tool.
  • Project Templates: Offers templates for various project types, including Java SE (console apps), JavaFX (desktop apps), Java EE (web apps), Maven projects, and more.

Web and Enterprise Development

  • HTML5, CSS3, and JavaScript: Provides a solid editor for front-end web development.
  • Java EE Support: Excellent tools for developing web applications using technologies like JavaServer Faces (JSF), Enterprise JavaBeans (EJB), and RESTful web services.

Database Integration

  • Services Tab: Allows you to connect to databases directly from the IDE.
  • SQL Editor: You can write, execute, and debug SQL queries.
  • Database Explorer: Browse database schemas, tables, and data visually.

Pros and Cons of Using NetBeans

Pros (+)

  • Free and Open-Source: No cost, no hidden features behind a paywall.
  • Beginner-Friendly: The user interface is intuitive, and the visual GUI builder is fantastic for learning desktop application development.
  • All-in-One Solution: Comes with everything you need (Maven, Git, debugger, database tools) out of the box.
  • Excellent Performance: Generally faster and lighter than IntelliJ IDEA Community Edition, especially on older hardware.
  • Great JavaFX Support: If you're building modern desktop apps with JavaFX, NetBeans is arguably the best IDE for it.

Cons (-)

  • Slower Development Pace: The project has a slower release cycle compared to IntelliJ IDEA.
  • Less Modern UI: The interface can feel a bit dated compared to the sleek design of modern IDEs.
  • Weaker Language Support: While great for Java, its support for other languages (like Python, Go, or Rust) is not as robust as in more specialized IDEs.

Getting Started: A Step-by-Step Tutorial

Let's create a simple "Hello, World!" application in NetBeans.

NetBeans for Java还值得新手入门学习吗?-图2
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Step 1: Download and Install NetBeans

  1. Go to the official NetBeans website: https://netbeans.apache.org/
  2. Click on the "Download" button.
  3. Choose the Java SE bundle. This is the best option for pure Java development. It includes the JDK (Java Development Kit) if you don't have one.
  4. Run the installer and follow the on-screen instructions.

Step 2: Create a New Java Project

  1. Launch NetBeans.
  2. From the main menu, go to File > New Project... (or press Ctrl+Shift+N).
  3. In the "New Project" window, under the Java category, select Java Application and click Next.
  4. Project Name: Give your project a name, for example, HelloWorld.
  5. Project Location: Choose a directory where you want to save your project.
  6. Create Main Class: Check this box. The IDE will automatically create a main class for you. You can leave the default name (e.g., helloworld.HelloWorld) or change it.
  7. Click Finish.

NetBeans will create your project and open the main.java file with some boilerplate code already written.

Step 3: Write and Run the Code

  1. You will see the following code in the editor:

    package helloworld;
    /**
     *
     * @author YourName
     */
    public class HelloWorld {
        /**
         * @param args the command line arguments
         */
        public static void main(String[] args) {
            // TODO code application logic here
        }
    }
  2. Place your cursor inside the main method, right after the // TODO comment.

  3. Type the following line:

    NetBeans for Java还值得新手入门学习吗?-图3
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    System.out.println("Hello, NetBeans!");

    Your code should now look like this:

    package helloworld;
    public class HelloWorld {
        public static void main(String[] args) {
            System.out.println("Hello, NetBeans!");
        }
    }

Step 4: Run Your Application

You have a few ways to run the code:

  • Click the "Run" button (the green "play" icon) in the main toolbar.
  • Press the F6 key on your keyboard.
  • Right-click anywhere in the source code and select Run File.

The output will appear in the "Output" window at the bottom of the screen:

run:
Hello, NetBeans!
BUILD SUCCESSFUL (total time: 0 seconds)

Congratulations! You've successfully created and run your first Java application in NetBeans.


Conclusion: Who Should Use NetBeans?

NetBeans is an excellent choice for:

  • Beginners: Its simplicity and all-in-one nature make it a perfect starting point for learning Java.
  • Java Desktop Developers: The visual GUI builder is unparalleled for building Swing and JavaFX applications.
  • Students and Educators: It's free and easy to set up in a classroom environment.
  • Developers who prefer a "batteries-included" IDE: If you want an IDE that handles Maven, Git, and debugging without a lot of configuration, NetBeans is a fantastic choice.

While it may not have the most modern UI or the most advanced features of IntelliJ IDEA, it remains a powerful, stable, and highly capable IDE that is more than sufficient for most Java development tasks.

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