How to use java program in notepad by ocec

How to use java program in notepad ?

Using Java with Notepad is a basic way to write and run Java programs without the need for an Integrated Development Environment (IDE) like Eclipse or IntelliJ IDEA. Here's a step-by-step guide on how to do it:

1. Install Java Development Kit (JDK): First, you need to have JDK installed on your system. You can download it from the official Oracle website and follow the installation instructions.

JDK website link : 

2. Set up Environment Variables: After installing the JDK, you need to set up the system environment variables. This includes setting the `PATH` variable to include the JDK's `bin` directory. This step ensures that you can run Java commands from the command prompt.

3. Open Notepad: Open Notepad, the default text editor in Windows. You can find it by searching for "Notepad" in the Start menu.

4. Write Your Java Code: Write your Java code in Notepad. For example, you can create a simple Java program like this:

 

 

public class HelloWorld {

    public static void main(String[] args) {

       System.out.println("Hello, World!");

    }

}

5. Save the File: Save your Java code with a `.java` extension. For example, you can save it as `HelloWorld.java`.

6. Open Command Prompt: Open Command Prompt by searching for "cmd" in the Start menu.

7. Navigate to the Directory: Navigate to the directory where you saved your Java file using the `cd` command. For example:

cd path\to\directory

Replace `path\to\directory` with the actual path where you saved your `HelloWorld.java` file.

8. Compile the Java File: Compile your Java file using the `javac` command followed by the filename with the `.java` extension. For example:

 

javac HelloWorld.java

This command will compile your Java code into bytecode and generate a `HelloWorld.class` file in the same directory.

9. Run the Program: After successfully compiling the program, you can run it using the `java` command followed by the class name (without the `.class` extension). For example:

java HelloWorld

 

This command will execute your Java program, and you should see the output `Hello, World!` printed in the Command Prompt.

 

That's it! You've successfully written, compiled, and executed a Java program using Notepad and Command Prompt.

 

 

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