How to install java on windows 10

Introduction

The Java Development Kit (JDK) is software used for Java programming, along with the Java Virtual Machine (JVM) and the Java Runtime Environment (JRE). The JDK includes the compiler and class libraries, allowing developers to create Java programs executable by the JVM and JRE.

In this tutorial, you will learn to install the Java Development Kit on Windows.

Prerequisites

• A system running Windows 10.
• A network connection.
• Administrator privileges.

Check if Java Is Installed

Before installing the Java Development Kit, check if a Java version is already installed on Windows. Follow the steps below:

1. Open a command prompt by typing cmd in the search bar and press Enter.
2. Run the following command:

java -version

The command outputs the Java version on your system. If Java isn’t installed, the output is a message stating that Java isn’t recognized as an internal or external command.

Download Java for Windows 10

Download the latest Java Development Kit installation file for Windows 10 to have the latest features and bug fixes.

1. Using your preferred web browser, navigate to the Oracle Java Downloads page.
2. On the Downloads page, click the x64 Installer download link under the Windows category. At the time of writing this article, Java version 17 is the latest long-term support Java version.

Wait for the download to complete.

After downloading the installation file, proceed with installing Java on your Windows system.

Follow the steps below:

Step 1: Run the Downloaded File

Double-click the downloaded file to start the installation.

Step 2: Configure the Installation Wizard

After running the installation file, the installation wizard welcome screen appears.

1. Click Next to proceed to the next step.

2. Choose the destination folder for the Java installation files or stick to the default path. Click Next to proceed.

3. Wait for the wizard to finish the installation process until the Successfully Installed message appears. Click Close to exit the wizard.

Set Environmental Variables in Java

Set Java environment variables to enable program compiling from any directory. To do so, follow the steps below:

Step 1: Add Java to System Variables

1. Open the Start menu and search for environment variables.

2. Select the Edit the system environment variables result.

3. In the System Properties window, under the Advanced tab, click Environment Variables…

4. Under the System variables category, select the Path variable and click Edit:

5. Click the New button and enter the path to the Java bin directory:

6. Click OK to save the changes and exit the variable editing window.

Step 2: Add JAVA_HOME Variable

Some applications require the JAVA_HOME variable. Follow the steps below to create the variable:

1. In the Environment Variables window, under the System variables category, click the New… button to create a new variable.

2. Name the variable as JAVA_HOME.

3. In the variable value field, paste the path to your Java jdk directory and click OK.

4. Confirm the changes by clicking OK in the Environment Variables and System properties windows.

Test the Java Installation

Run the java -version command in the command prompt to make sure Java installed correctly:

If installed correctly, the command outputs the Java version. Make sure everything works by writing a simple program and compiling it. Follow the steps below:

Step 1: Write a Test Java Script

1. Open a text editor such as Notepad++ and create a new file.

2. Enter the following lines of code and click Save:

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

3. Name the file and save it as a Java source file (*.java).

Step 2: Compile the Test Java Script

1. In the command prompt, change the directory to the file’s location and use the following syntax to compile the program:

javac [filename]

For example:

After a successful compilation, the program generates a .class file in the file directory.

2. Run the program with the following syntax:

java [filename]

The output shows that the program runs correctly, displaying the Hello world! message.

Conclusion

This tutorial showed how to install the Java Development Kit on a Windows system. If you are interested in learning more about Java, read our list of 13 best Java IDEs for writing, debugging, and testing Java code.

In this tutorial, we will discuss how to install Java 8 on Windows 10. The steps should be the same for other versions of Java and older versions of Windows.

Notes: You may also install the popular IDEs to develop Java applications by following — How To Install Eclipse For Java On Windows, How To Install IntelliJ IDEA for Java on Windows, How To Install NetBeans On Windows, and How To Install VSCode For Java On Windows. You may also follow the How To Install OpenJDK 16 On Windows, How To Install OpenJDK 16 On Ubuntu 20.04 LTS to install the latest OpenJDK and How To Install Java 16 On Windows, How To Install Java 16 On Ubuntu 20.04 LTS to install Oracle JDK.

System Checks

In this step, we will test whether Java is already installed or not. To do so, open the command prompt and type java -version as shown in Fig 1. It shows that Java is not installed.

Download Java 8

Open the download link to select the available versions as shown in Fig 2.

Click the Download Option as highlighted in Fig 3. It will ask to accept the License Agreement before starting the download as shown in Fig 3 and Fig 4. It might also ask to login to Oracle before starting the download.

Install Java 8

Double click the downloaded file to start the installation. In windows 10, the installer asks for system permission before starting the installation. Click the Yes Button to allow the installer to execute. The installer shows the Welcome Screen as displayed in Fig 5.

Make sure that you have gone through the updated License Agreement of Java. Now click the Next Button to continue with the installation. The next screen shows options to select optional features to be installed together. Leave the default options without making any change. We can also change the installation location on this screen if required as displayed in Fig 6.

Now click the Next Button to start the installation. It will show the progress as displayed in Fig 7.

The installer will also ask to choose the location of JRE as displayed in Fig 8.

Click the Next Button to start the JRE installation. It will show the progress as shown in Fig 9.

At last, it shows the Success Screen after completing the installation as shown in Fig 10.

Now open the Command Prompt and type the command java -version to confirm whether it’s installed successfully as shown in Fig 11.

It will either show the message — java is not recognized as an internal or external command or show the previously installed version. In order to start using the JDK installed by us from the command prompt, we need to set the environment variable. You can follow the below-mentioned steps to do so.

Right Click -> My Computer(This PC) -> Properties -> Advanced System Settings

The above steps will open the Windows settings panel as shown in Fig 12.

Now click on Environment Variables, select Path under System Variables section and click on Edit. We need to add the path of installed JDK to system Path.

Remove the path of previously installed JDK. Also, update JAVA_HOME in case it’s already set. Now click on New Button and add the path to JDK bin which is C:Program FilesJavajdk1.8.0_241bin in my case as shown in Fig 13. Press OK Button 3 times to close all the windows. This sets the JDK 8 on system environment variables to access the same from the console. You may also set the JAVA_HOME environment variable which is referred by some of the software including Android SDK Tools to determine the Java version.

Now again open the console and test the Java version as shown in Fig 14.

Getting started with Java — Hello World

In this step, we will write, compile, and execute our first program in Java using the standard Hello World example.

Now write the first Java program as shown below, save the program as HelloWorld.java and exit the editor. Make sure that the class name and file name are the same.

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

Now open the command prompt and navigate to the path where you have saved your Java program. Use the below-mentioned commands to compile and execute the program.

# Compile - Specify file name and extension
javac HelloWorld.java
# Execute - Spicy file name
java HelloWorld



  


                       
  



# Output
Hello World !!

These are the easy to install steps required to install Oracle Java on Windows and write, compile and execute the Java program.

Summary

This tutorial provided all the steps required to install Java 8 on Windows 10 and also provided the steps to configure the system path to access Java from the console. At last, it explained the steps required to compile and run the Java programs using a simple Hello World program.

How To Install Java 12 On Windows 10

Oracle  JDK is a highly versatile kit which can be used for testing applications, and program development alike, using the Java programming language. This article is going to be a brief guide on How to download and install Java 12 on Windows 10, for beginners.

Java is one of the most extensively used computer languages. It is an object-oriented programming language and is very easy to learn. To write and run Java code we need Oracle Java Development Kit (JDK) installed on our computer. JDK provides a development environment for programs, applications and tools based on Java.  

Java SE 12.0.1 is currently, the latest release for the Java SE Platform.

So, if you follow these few simple steps, you should be able to download and install JDK 12 on your Operating Systems, completely hassle-free.

• Download Java/JDK from the Oracle Website
• Install Java/JDK on your system
• Set up Java Environment Variables on Windows 10

Download Java/JDK from the Oracle Website

To install JDK on Windows, open any browser, search for download Java/JDK 12 and open the Oracle Official Website.

Step 1: Visit the Oracle Website Downloads Page

• Head to the Menu button on the top-left corner of the screen (which looks like 3 short lines stacked on top of each other) and proceed to Products >> Java >> Download Java (JDK) for Developers

                                                                          Or,

you could straightaway log on to the downloads page on the Oracle Official Website.

• Click on the download button. It looks like a square with the Java logo on it.

Step 2: Java SE Development Kit

• Scroll down. You will come across a box which looks like the following image. You’ll see a plethora of options to download the Java SE 12 installation file for Linux, MacOS and Windows.

• At the top of the box, you’ll see an option named Accept License Agreement. Select the bubble next to it.

• You, then, have to select your operating system. For Windows 10, click on jdk-12_windows-x64_bin.exe

Note: You need a 64-bit operating system to install any version of Java after JDK 9. If you’re still using a 32-bit OS, you can’t install Java JDK 12.

Install Java JDK 12 on your system

After the download has been completed, you can follow a few simple steps to install Java JDK 12 on Windows 10.

• Open the downloaded file and it will lead you to an installation wizard simply click on Next.

• You can go ahead and change your installation location but I reckon you keep to the default location and click on Next.

You now have installed Java JDK 12 on your Windows 10 System!

Set up Java Environment Variables on Windows 10

Hope you’ve found it pretty simple till now. But here’s the catch!

By just downloading and installing JDK 12, Java is not going to work. You need to set the environment variable which will help in compiling the  Java Code. Now, to set up a Java environment, you’ll need to do the following.

Step 1: Set up Java Environment Variables

• Navigate to C:Program Files and look for Java folder. Open it and you will find jdk 12 folder.

• Go to the bin folder and copy the path of the bin folder.

• Next, navigate through this path, Control Panel > System and Security > System > Advanced System Setting > Environment Variables

• Under the System Variables, you will find a variable named PATH just go to edit and add the bin folder location.

Java does not necessarily need any environment variables to be set. However, setting environment variables does make certain things easier. The environment variables point to the folder location where your preferred version of Java is installed. These environment variables are mainly required by external programs and tools to figure out where exactly is Java installed on your machine.

Step 2: Check if the Variables have been set correctly

Now to check whether you have successfully set up Java, open the Windows Command Prompt and type the following commands

• java -version

• javac 

You should see something like the following image.

Congratulations! You’ve just successfully learnt to install Java 12 on Windows 10. Now you’ll be running complex codes in Java in no time at all!

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