Java software is used as a platform for many Windows programs and is a recognized standard for developing various applications and games. It provides a lot of opportunities for the programmer, but users have to pay for it in the form of the need to install Java libraries or even Java Virtual Machine on their computer or laptop. And it would be nice if everything went “without a hitch,” but very often the JAVA software does not install and an installation error is displayed. What to do and how to successfully install it on a Windows system? Here are some tips.
Already now users are bored with warning messages, so at least install Current version. Some companies also need to refocus. Now the security experts have achieved their goal. Time and time again, attackers discover vulnerabilities in programs and then use them to launch their attacks.
The user usually has only two options: deactivate the affected feature or remove it, or wait for an update from the manufacturer. In general, we always recommend updating your operating system and its programs. Once the manufacturer provides an update, you should install it to benefit from the improvements.
1. Usually, when loading software from the official website, you download a special web installer, which will then automatically download the necessary libraries via an Internet connection. But here an antivirus or firewall may be included in the game, which may regard this as viral activity and block Internet access to the installation application. Therefore, try downloading a full-fledged offline installer from here - link, and then try installing Java through it. Don't be surprised that it weighs about 50 Megabytes, while the web installer is almost 50 times smaller. This is fine.
It is important that both steps are completed! First, open a command prompt. . The installation file should be downloaded as described above and can be launched immediately by double clicking. A dialog box will then open that will guide us through the installation process.
Step 4: Complete the installation
By clicking “Next” we will move to the second dialog box. The components to be installed and the installation directory are displayed. Default settings can be applied directly. Default settings can also be applied directly here. Clicking Close closes the installation program.
2. If you already had an older version of Java, try uninstalling it and installing it again through the Windows Control Panel.
3. Check your Windows 7, 8 or 10 operating system with a good antivirus program. For example, DrWeb CureIt or Kaspersky Antivirus. Often malware They disguise themselves as system libraries and then prevent them from being updated.
Enter the path into the environment variable
There you can download two documentation archives. All files have been unpacked into the documentation directory. If the system variable path is not set, always specify the full path to the executable to run. Therefore, it is useful to permanently save the search path in the system variable path so that it is still available after a restart.
Make sure the path variable is set correctly
In most cases the full path looks like this. Notes on the Path system variable. Only by opening a new console window that changes to the System variable path take effect.
- The rest of the following are ignored.
- To do this, enter the command “path” in the command line.
4. Clean Windows registry by using special utility. For example, CCleaner.
It is errors in the registry that are often the reason why Java software does not install on a computer.
5. Try cleaning system folders:
C:\ProgramFiles\Java
And
C:\ProgramFiles\Common Files\Java
Sometimes files left over from old versions lead to Java installation errors.
A message appears on the screen.
- Generating a source file: The source file contains the source text.
- The source code can be understood by other programmers.
- The source file is created and edited using text editor.
All variables, statements and file names must be written as specified. Therefore, you should always pay attention to case sensitivity. In addition, the main class and file name must be identical. The file must be stored in a separate folder. If everything was done correctly, the Save As dialog should look like this.
6. Try updating Windows components using Update Center. It may happen that the installation error Java Runtime Environment arises even due to outdated version Internet Explorer.
7. Download the fix file with the fixes and apply the changes to the registry.
Modern users of computers running Windows OS can enjoy the full range of capabilities of Java technology (in Russian it sounds like Java). Current operating systems today are Windows XP, 7, 8 and 10, as well as server Microsoft systems. Current versions of Java today: 7 and 8.
First, you need to open a command prompt. Then you should go to the directory where the source file is located. This is shown in the picture below. The following command should be entered at the command line. There should be 2 files in the directory. To do this, enter the following command in the same directory. Attention! Suffix. The class cannot be specified.
- The class name is misspelled.
- There is no main method.
- The main method is not declared correctly.
Why should an Internet user download and install Java?
Without Java today it is almost impossible to imagine working on the Internet, since it is something more than the programming language of the same name. Thanks to it they function effectively Cell phones and most Internet applications: games, interactive maps, banking systems, distance learning courses, and so on. The developer recommends installing only the latest version of the program. This way you will get the most secure solution.
Double-click the file. If the program does not start, go to the next point. Open your console. Continue to the next point. Then you must allow applets to run unsigned applets. On the page. See the article about restarting the plugin database. Make sure the "Open" in 32-bit mode box is unchecked.
Make sure plugin scanning is not disabled
If you want to do this manually, please consult: Manually remove the plugin. For this you can refer to the article. . Version 56 Version 55 Version 54 Version 53 Version 52 Version 51 Version 50 Version 50 Version 49 Version 48 Version 47 Version 47 Version 46 Version 45.
The best download option is from the official website
What is Java
This is a modular set of interconnected programs designed for different categories of users. To be precise, Java as a technology has several components:
- programming language and software development kit;
- platform for computing on computers for any purpose and running any OS.
The platform includes, in addition to standard components and technology modules, also program creation environment in a programming language called the Java Development Kit, or (JDK - Java program developer kit). Majority ordinary users can only install runtime environment Java Runtime Environment(JRE). The basis of which is the Java Virtual Machine (JVM – virtual machine Java) and the set of provided libraries and components of its environment (classes). All of them perform the work of launching and maintaining programs written in the mentioned programming language.
Was this article helpful? In this article we will show you how to do this. 
- Click the red plugin icon in the address bar and a message box will open.
- In this new panel, click Allow and Remember.
Installing the Java runtime environment and its features in Windows OS
Oracle, the current owner of the technology and its components, is constantly improving the software. From its official resource, it offers absolutely free download the latest version of the Java package for all common operating systems, and primarily for Windows. Here the user can choose two types of download: interactive And autonomous modes. The current package only has latest version, so try not to use old version to the detriment of security and reduced program performance.
Make sure the serial port connected to your breadboard does not have an interrupt with another serial port. 
The shortcuts change as follows. Operating systems must be fully updated with the latest service packs and security patches.
It is highly recommended to install the latest available version. As of this writing, the latest version is available here. . Please note that memory space is required. Settings. Using other software may limit the amount of available memory.
Before installation, the operating system is configured so that the installation of the runtime environment is not interfered with by active OS protection. We are talking about firewalls and firewalls antivirus programs, they need to be disabled. After the installation is complete, run these utilities.
Installing Java interactively launches a special executable file IFTW (Install From The Web) directly from the Internet. You must be online until the end of the installation, otherwise it will be terminated. Method offline download easier, downloaded from the server exe file, can be launched and tested at any time, including without the Internet. All subsequent Java configuration occurs automatically, including constant readiness for updates.
To the Lexican. More disk space may be required depending on the number of documents analyzed and the project. settings used. Not all features are available in some older browsers and performance may be affected, especially for map rendering. It is highly recommended to use the latest patched browsers.
Version 4, but not supported. Select the Tools menu in your browser and then Compatibility View Settings. Procedure Reserve copy before the update. The installer may ask you if you want to install to an existing directory, this is normal.
- Before copying, make sure that there is sufficient disk space on the disk.
- Make sure there is enough disk space for copying.
Selecting boot type and OS bit depth
The current version is 8u66, and to install it on Windows OS you will need to meet several general conditions:
- Yours Account must be configured with Windows OS Administrator rights;
- You must install one of the latest browser versions (Internet Explorer, Firefox, Chrome, Opera).
The Java package is distributed for 32 and 64 bit systems and browsers. For the uninitiated, we point out: the bit depth is signed differently English word bit, for example, XP Home has only 32 bits. Choose the version of the package that suits your browser. This is especially true for manual installation, which specifically offers two download options for Windows. The only exception is server systems, which will only require downloading the 64 bit OS version, e.g. Windows Server 2008 R2.
The recommended update procedure is given below, this procedure will provide you with. This needs to be saved if necessary, or at least until it is created backup copy new car. If they are not in the same location and you make any changes to the project settings, you will have to reselect the location of the text documents and start the project from the beginning. If you don't change the project, you can view the results without having the original text documents. Pre-transfer backup procedure.
In the absence of technical support from the official developer of Windows XP, the new eighth version of Java may not work correctly. To use browsers of both levels on older versions of Windows OS, you should install both versions of Java to avoid version conflicts. The fact is that in this case, during installation, one common module will be installed for connection.
This will not support your original text documents, since they could be located anywhere on your hard drive.
Should show the version number you need.
- You must maintain them separately.
- Make sure this backup is completed successfully and is valid.
- All your old projects will be saved.
You may need to configure your firewall or antivirus to add exceptions to allow such actions.
When you call a main method from a class, you will see a parameter input field that will prompt you with an array of strings that the main method takes as a parameter.
- Close the control panel when you're done.
- Select "Yes" to continue with the installation.
Java Package Installer Window
Java and Windows 10
Java 8 Release 51 Update supports Windows 10. Unfortunately, new browser Edge, included in version 10 does not support Java technology, for this reason you will have to use other browsers. operating room Windows system 10 contains a convenient search system (magnifying glass in the lower left corner of the screen). The easiest way to call the control panel is through it by typing “ Configure Java».
If you want to pass, say, three parameters, from command line you must write. This passes an array of three strings, just as the command shell does. To do this, enable the “Clear screen when calling a method” option in the Options menu of the terminal. You can also clear the terminal programmatically from your program. The first way is through the “Settings” dialog. Open the Settings dialog and select the Libraries tab. Then add a place where your classes are the library path. The selected libraries will now be available in all projects you open.
Checking the bit depth
In browsers of all types and editions, there is a main menu item “Help” or “About”. They directly indicate the browser bitness, and if it is not there, then consider your version to be 32-bit.
Experts advise carefully check browser bit depth, this is especially true for Internet Explorer. Even in the standard delivery of 64-bit Windows operating systems from version XP to version 7, they use the previous 32-bit browser by default. Another type is also included, but it is installed optionally by the user. Be careful, such a browser does not guarantee the correct display of all modern sites and web applications.
These libraries will be available in all projects. This convenient way, which allows you to load libraries in stages. This is very convenient if you want to distribute the project with any libraries that may be needed to make it work. You can simply pin the project directory and distribute the project. This can be very useful for educational or testing purposes for instantiating library classes.
Then enter the fully qualified class name for the class you want to create. Similarly, you can call static methods of library classes. For other languages you will need to do your own translation. All labels, menus and dialogs must be translated. We are looking for volunteers for this.
If your PC is of sufficient size random access memory(4GB or more), use only a 64-bit browser, as it can use twice the amount of computer RAM. This means only one thing: your programs loaded in the current OS session, especially games, will run as quickly as possible.
Create a new directory for the language you need. Then copy all the files from one of the other language directories to your new language directory. Someone might just be looking for a translation into your language. Installing a local copy of the documentation will allow you to view the documentation while working offline.
To use local copy documentation, follow these steps. You can edit both of these files using a standard text editor. Firewalls typically use one of two methods to block network traffic. The second approach is to block traffic on a program-by-program basis. Some firewalls only block incoming connections, while other firewalls may also block outgoing connections.
Verifying the installation
After all installation procedures, regardless of the download option, you may need to restart the browser running at that time. This procedure is necessary to enable the Java module on the Oracle server side. Remember, installation only latest version will ensure the security of the browser.
What to do if Java does not install or does not work correctly
The website of the Java developer company has a page http://www.java.com/ru/download/help/ which provides a description of solutions to the main 15 problems with installation, operation and updates of the package.
For example, users of OS XP, of whom there are still many, risk encountering the problem of file corruption. Her decision was implemented by herself by Microsoft, which released a special system utility program Microsoft Fix it(supports XP, 7 and 8 versions). After using the utility, which can be downloaded from the official Microsoft website, reinstallation Java offline will happen with the recovered files.
Video on the topic
