If you develop your own Java programs, you’ll need to convert the JAR to an executable format. Another easy option is to run a JAR file in cmd, your PC’s built-in command-line tool. All you need to do ...

Now, open the Command Prompt and run it as administrator. We will make use of the ‘cd’ command to change the operating directory on the Command Prompt to the one where your Java program is stored.

`javac filename.java` This command will generate a file called `filename.class` in the same directory. Step 3: Run the Java program. Now, you are ready to run the Java program from the command prompt.

Step 2: Name the file FirstJavaProgram.java and save it. You might be asking why we called the file FirstJavaProgram; the reason is that the file should always be named the same as the public class ...