How to run a java program from dos prompt

Step 5: Use the following command to go to the folder where the previous Java program is stored. Java Program to open the command prompt and insert commands This article aims to provide you a simple code to open Command Prompt and how you can insert the commands in it using Java language.

Here we will use Runtime class of java. It is path in your system where java compiler is available For example variable value:C: Program Files Java jdk1. Python Pillow. Python Turtle. Verbal Ability. Interview Questions. Company Questions. Artificial Intelligence. Cloud Computing. Data Science. Angular 7. Machine Learning. Data Structures. Operating System. Computer Network.

Compiler Design. Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Learn why people trust wikiHow. Download Article Explore this Article methods. Tips and Warnings. Related Articles. Article Summary. Author Info Last Updated: July 11, Method 1. Save the program. After using a text editor, such as NotePad, to create your Java program, save the program with a.

Of course, the file name can be anything. For the purposes of this tutorial, "filename" will be used as a placeholder for your file name. To ensure that your file is saved as a. Make note of where you saved the file on your system. If you are unsure of how to write a program in Java, check out our tutorial on how to program in Java. For the purposes of learning how to compile and run a program, though, you can use any sort of Java program. Accessing the command line differs slightly for Mac and Windows.

Check that Java is installed. Type java -version into your command line. If java is installed, you will see a message stating what version of Java is currently installed. If not, you may need to install the Java Development Kit from their website. Navigate to the correct folder. Use the command cd followed by the directory name to change your working directory. Compile the program.

Once you are in the correct directory, you can compile the program by typing javac filename. If you have any errors in your program, or if there is difficultly compiling, the command prompt will notify you. Check out our article about how to fix compiler errors in Java for more help. Run the program. Of course, replace "filename" with whatever the name of your file actually is.

If you receive an error, or if your program fails to run in any way, refer to the troubleshooting method. Method 2. Set your path. If you are running a simple program with all of the files in the same directory, you will probably not need to do this. However, if you are running a more complex program with files in multiple directories, you will need to tell the computer where to look for these files. Substitute jdk1. Be sure you are entering in this command while in the directory containing your Java project.