How To Run Java Code Through Cmd

Save the program. You can create a Java program using a simple text editing program like Notepad or an independent development environment IDE such as Eclipse. It's recommended you save the filename as the name of the Java class. Be sure to add the quot.javaquot file extension to the file.

Step 3 Open the command prompt Windows or terminal Mac or Linux. Step 4 Navigate to the directory where you saved your Java code using the quotcdquot command. Step 5 Compile your Java code by typing quotjavac filename.javaquot in the command promptterminal. This will create a .class file in the same directory. Step 6 Run your Java program by

You can compile any java source using javac in command line eg, javac CopyFile.java. To run java CopyFile. You can also compile all java files using javac .java as long as they're in the same directory. If you're having an issue resulting with quotcould not find or load main classquot you may not have jre in your path.

Step 5 To execute or run this Java file using the command prompt, just type the JAVA command followed by the file name without quot.javaquot extension. Step 6 At the end, you can see the output in the console.

Watch Tutorial Video on How to run Java program using cmd Step 8 Now we are Ready with hello.java file. Step 9 We have to open CMD with current working directory, where our hello.java file is. - To open CMD press Windows key r to open RUN and then type cmd and press Ok.

Now, save this file under the same name as that of class, HelloWorld.java and then run the javac HelloWorld.java command from your command prompt or cmd where you saved the file, this command will create a .class file of your java program in the same folder itself. I have placed my file in the demo folder as shown below -

Compile the Java program with the javac command as shown below. 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 quot.classquot extension, indicating the program has been compiled. javac quotProgram Namequot.java. Use the java command to run your program

Run a Java Program using Command Prompt We use Java compiler javac to compile Java program and the Java interpreter java to run the Java program. Goal To run a Java program using Command Prompt. Steps to achieve our goal i. Create a folder ii. Create a java class and write a java program iii. Open command prompt iv.

Step 3 To save a Java program press Ctrl S key and provide the file name. Remember that the file name must be the same as the class name followed by the .java extension.. If you are writing the same Java program as above save it by providing the file name CharArrayToStringExample.java press enter key or click on the Save button.. We have saved the above program at the location C92demo.

How to Compile the Java Code. Before running our Java code, we need to compile it first. To compile a Java codeprogram, we get the class file. Then we need to executerun the class file. How to compile Java code using the terminal. We need to use the command javac file_name_with_the_extension.