Creating a Java Class with Package from Command Line
Creating a Java Class with Package from Command Line
When working on Java projects, creating classes with packages from the command line can be essential for organization and maintainability. Below is a step-by-step guide to help you achieve this.
Step 1: Create Directory Structure
To start, create a directory structure that matches the package name. For example, to create a package called “com.example”, you would do:
Step 2: Write Java Class
Next, create a Java class within this directory. Let’s create a simple class named “HelloWorld” in the package “com.example”:
public static void main(String[] args) {
System.out.println(“Hello, World!”);
}
}
Step 3: Compile the Java Class
To compile the Java class, use the javac command. Navigate to the parent directory of the package directory and compile the class:
Step 4: Run the Java Class
Finally, you can run the Java class using the java command. Navigate to the parent directory and run the class:
Ensure that Java is properly installed and the CLASSPATH is set up correctly to run the class.
Conclusion
Creating Java classes with packages from the command line is a fundamental skill for Java developers. By following the steps outlined above, you can effectively organize your codebase and simplify the development process.
