Install Jdk And Write A Simple “Hello World” Java Program, Compilation, Debugging, Executing Using Java Compiler And Interpreter

In this blog, we will understand that how to install JDK known as The Java™ Development Kit and run our first common program which is "Hello World".

Here are the steps to install JDK, write a "Hello World" program, compile it, and execute it using the Java compiler and interpreter:

Install JDK

• Go to the Oracle website and navigate to the Java SE downloads page. (Click Here To Download)
• Accept the license agreement, and then download the appropriate JDK package for your operating system (Windows, Mac, or Linux).
• Once the download is complete, run the installer file.
• Follow the prompts in the installer to select the installation directory, specify any optional components you want to install, and configure any advanced settings.
• Wait for the installation to complete.
• Once the installation is finished, you may need to set the JAVA_HOME environment variable to point to the installation directory. This will vary depending on your operating system.
• Test the installation by opening a command prompt or terminal window and typing "java -version". If the installation was successful, this should display the version number of the JDK you just installed.

Write a "Hello World" Program

• Open a text editor, such as Notepad or TextEdit.
• Type the following code into the editor:

public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello World");
    }
}

• Save the file as HelloWorld.java.

compile

• Open a command prompt or terminal window.
• Navigate to the directory where you saved HelloWorld.java.
• Type the following command to compile the program:

javac HelloWorld.java

• If there are no errors, a new file named HelloWorld.class will be created in the same directory.

Execution

• Type the following command to execute the program:

java HelloWorld

• If everything worked correctly, the following output should appear on your screen:

Hello World

That's it! You've now installed the JDK, written a "Hello World" program, compiled it, executed it, and even learned the basics of debugging.

❤️ I Hope This Helps You Understand, Click Here To Do More Exercise In Java Programming.

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