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    Executing a Java program involves writing, compiling, and running the code. Follow these steps to successfully execute your Java program:

    1. Write the Java Code

    • Open a text editor (e.g., Notepad, VS Code) or an IDE (e.g., IntelliJ IDEA, Eclipse).

    • Write your Java program. For example:

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

    • Save the file with the .java extension. Ensure the filename matches the public class name (e.g., HelloWorld.java).

    2. Compile the Program

    • Open a terminal or command prompt.

    • Navigate to the directory where your .java file is saved using the cd command:

    cd /path/to/your/file
    Cóipeáilte!

    • Compile the program using the javac command:

    javac HelloWorld.java
    Cóipeáilte!

    • This will generate a HelloWorld.class file in the same directory.

    3. Run the Program

    • Execute the compiled program using the java command:

    java HelloWorld
    Cóipeáilte!

    • The output will appear on your terminal:

    Hello, World!
    Cóipeáilte!

    4. Running Programs with Packages (Optional)

    If your program uses packages, compile and run it as follows:

    How do I run a Java program from a command line?
    Running Java programs from the command line is straightforward once you understand the workflow: install the JDK, verify the environment, write/compile code, and execute it. The FileCopier example demonstrates how to apply these steps to a real-world task (file I/O), but the same process works for any Java program.
    javathinking.com
    javaspring.net
    https://www.javaspring.net/blog/how-do-i-run-java
    How to Run Java: A Comprehensive Guide - javaspring.net
  1. GeeksForGeeks
    https://www.geeksforgeeks.org › java › how-to-r…Aistrigh an toradh seo

    How to Run Java Program? - GeeksforGeeks

    23 Iúil 2025 · To run a Java program, you need to follow these steps: Step 1: Install Java Development Kit (JDK) on your computer. You can download the JDK from …

  3. javaspring.net
    https://www.javaspring.net › blog › how-do-i-run-javaAistrigh an toradh seo

    How to Run Java: A Comprehensive Guide - javaspring.net

    24 Márta 2026 · Running a Java program involves a series of steps, from writing the code to executing it. This blog will provide a detailed walkthrough on how to run Java programs, covering fundamental …

  4. Dev.java
    https://dev.java › learn › getting-startedAistrigh an toradh seo

    Getting Started with Java - Dev.java

    • There are several steps that you need to follow to create a Java application. This tutorial shows you how to create a very simple Java application. If you need to create an enterprise application, the creation process is more complex but at its core you will find these simple steps. The first of these steps is to write some Java code in a text edit...
    Féach tuilleadh ar dev.java
  5. javatechgeeks.com
    https://javatechgeeks.com › running-java-programs-a-beginners-g…Aistrigh an toradh seo

    Running Java Programs: A Beginner's Guide - JavaTechGeeks

    Whether you’re a beginner taking your first steps in programming or an experienced developer working on complex applications, running a Java program is a fundamental skill to master. In this guide, I’ll …

  6. javathinking.com
    https://www.javathinking.com › blog › how-do-i-run-a-java-progra…Aistrigh an toradh seo

    How to Run a Java Program from Command Line on Windows: Step-by …

    16 Ean 2026 · In this tutorial, we’ll walk through **every step** to run a Java program on Windows, including setting up your environment, writing a simple file copy program, compiling it, and executing it.

  7. javaspring.net
    https://www.javaspring.net › blog › run-a-java-codeAistrigh an toradh seo

    Running Java Code: A Comprehensive Guide — javaspring.net

    16 Ean 2026 · Running Java code is a fundamental skill for Java developers, whether they are beginners learning the basics or experienced programmers working on large-scale projects. This blog will …

  8. W3School
    https://www.w3schools.com › java › java_getsta…Aistrigh an toradh seo

    Java Getting Started - W3Schools

    Get Started With Java At W3Schools, you can try Java without installing anything. Our Online Java Editor runs directly in your browser, and shows both the code …

  9. GeeksForGeeks
    https://www.geeksforgeeks.org › java › compilat…Aistrigh an toradh seo

    Compilation and Execution of a Java Program

    14 DFómh 2025 · Java is a high-level, platform-independent language. To run a Java program, it must go through compilation and execution. Understanding this …

  10. FreeCodecamp
    https://www.freecodecamp.org › news › ho…Aistrigh an toradh seo

    How to Execute and Run Java Code from the Terminal

    10 Márta 2022 · Learn how to compile and run Java code directly from your terminal window on any operating system. Follow the steps for simple and …

  11. JetBrains
    https://www.jetbrains.com › help › idea › run-jav…Aistrigh an toradh seo

    Tutorial: Run a Java application | IntelliJ IDEA …

    11 Feabh 2026 · This tutorial explains how to run a Java application in IntelliJ IDEA. Along the way, you will learn how to use run/debug configurations to control how …

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