Java is a cross-platform development and runtime environment. With its help, highly loaded and productive software systems are created. Java can run equally in different operating systems - Windows, Linux, Mac. In addition, its use is possible on a wide variety of equipment. In order to run applications in Java or start coding on it, you must first install a set of special software. This article describes how to install Java.
Installation procedure on Windows 7
To install Java on Windows 7, you need to download the latest version from the official website oracle.com. It’s worth immediately refining that JRE is used to run, and JRE and JDK for programming.
The latest versions on the site contain an automatic installer that will guide you through all stages of the installation. Before installing Java, you should pay attention to the bit depth of the operating system and browser. For example, if you access via 32-bit Internet Explorer, the online installer on the site will automatically determine that you need a 32-bit version. Therefore, if 64-bit is required, then you have to reinstall the browser.
But you can download the necessary files manually on the download page. Several system options are available to help with the Java question: how to install it:
- interactive;
- offline mode;
- offline mode in 64-bit format.
The interactive system contains one small installer file, which itself will download the necessary files from the network and install them. Offline mode involves downloading a full-weight option. There are versions for 32 and 64 bits.
How to install Java JDK
To install the JDK development toolkit in Windows 7, go to the download section on the official Oracle website. There are also versions for 32 and 64 bits. The distribution weighs an order of magnitude larger than the standard version of the JRE.
After downloading, the file must be launched, and the installation will take place automatically. After a successful installation, you need to perform one more procedure - set the PATH environment variable. This is necessary so that you can compile and run files without having to go to the project folder every time.
Setting environment variables
In the Windows 7 operating system, this procedure is performed through the control panel, in which you need to find the "System" item. On the left there will be a link to additional system parameters, which you must choose. In the new window, the lowest button labeled "Environment Variables" will lead to the setting. To implement the path, you need to create a new variable named "JAVA_HOME". Its value must contain the full path to the files. For example, like this: C: \ Program Files \ Java \ jdk. The path may vary on each computer.
Now you need to change the contents of the Path variable itself. It is already on the list, so just select and edit it. It is worth paying attention to the fact that the last value must be set with a semicolon - “;”. Then enter the full path to the bin folder, for example, C: \ Program Files \ Java \ jdk \ bin. No signs are required at the end. After clicking OK, the changes are saved. But to use them, you need to restart the computer.
Health Check
In Windows 7, you can verify that the installation was successful using the command line. It is usually called by the combination of Windows + R. In the terminal, enter the java-version command and press Enter. The system should issue a build version if installation is successful.
The technology covers many different devices and systems. Of particular popularity is programming for the Android OS, since the code is written in Java with an admixture of specific Android APIs. Java ME is also known on earlier versions of mobile phones. But ME is a very stripped-down version, developing on which full-fledged PC applications is quite difficult.
This article described in detail how to install Java on Windows 7. License for JRE and JDK is free. And that means you can install Java for free.