Run command in Java 20

To run a Java program from the command line in Java 20, you need to follow these steps:

1. Open the command prompt/console.
2. Navigate to the directory where your Java program resides using the cd command.
3. Compile your Java program by running the javac command followed by the program name with the .java extension. For example: javac MyClass.java
4. Once the compilation is successful, you can run your Java program by entering the following command into the console: java MyClass. Here, MyClass is the name of the class that contains the main method.

Example:

Suppose you have a Java program called HelloWorld.java:

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

To run this program from the command prompt, follow these steps:
1. Open the command prompt/console.
2. Navigate to the directory where the HelloWorld.java file is located using the cd command.
3. Compile the program by running javac HelloWorld.java.
4. Run java HelloWorld.

You should see "Hello World!" printed to the console.