Java is one of the oldest and most prominent languages in the world. It doesn’t matter whether you are a beginner or a professional, you would need to run some Java codes.

First things first, you will have to write the code that you want to run and save that as a Java executable file. For this purpose, you can use either MS Word or Notepad.

Another easy option is to run a JAR file in cmd, your PC’s built-in command-line tool. All you need to do is input a command while running the app with admin rights, and the file will be opened. The ...

(You can also right-click the file and choose “Run Java.”) The tests will run and a checkmark will become available — this allows you to view the test run results, as seen in Figure 4. Figure 4.

How do you run a JAR at the command line? As long as you have Java installed, and the PATH variable points to the \bin directory of the JDK, you issue the following command to run a JAR file at the ...

Be warned that you won’t see anything happen. However, if you use the dir command, you’ll notice a new file in your directory ending in the “.class” extension, indicating the program has been compiled ...