Adobe Flash和Java是我们大多数人在我们的Windows计算机上安装的两个下载，因为它们为我们提供了更丰富的互联网和浏览体验。我们已经了解了如何管理 Adob​​e Flash 设置。今天我们将了解Windows 10/8/7中的Java 设置^{(Java Settings)}。

什么是 Java

Java 是一种编程语言^{(Java is a programming language)}和计算平台，它支持最先进的程序，包括实用程序、游戏和业务应用程序。它允许您玩在线游戏、与世界各地的人聊天、查看 3D 图像等等。

Java 控制面板

Java软件或Java 运行时环境^{(Java Runtime Environment)}也称为Java 运行时^{(Java Runtime)}、运行时环境^{(Runtime Environment)}、运行时^(Runtime)、JRE、Java 虚拟机^{(Java Virtual Machine)}等。它可以从Java 控制面板^{(Java Control Panel)}进行管理。要访问Java 控制面板^{(Java Control Panel)}，请打开控制面板^{(Control Panel)}并单击Java。在这里，您将能够获得有关版本号的信息并查看^(View)文件。

删除临时 Java 文件

浏览互联网时，每当您的浏览器使用Java时，Java文件都会存储在特殊文件夹中，以便以后更快地执行。

要查看文件夹的位置和其他详细信息，请单击“设置”^(Settings)按钮。

默认情况下，这些临时 java 文件存储在

C:\Users\Username\AppData\LocalLow\Sun\Java\Deployment\cache

JAR格式的文件夹。您可以为这些JAR^(JAR)文件设置压缩级别，甚至设置为存储这些文件预留的数量。

要删除这些临时Java JAR文件，请单击Delete Files。现在您可以选择要删除的文件，然后单击“确定”。

使用命令行清除 Java 缓存

要使用命令行清除Java缓存，请打开命令提示符窗口，键入以下内容并按 Enter：

javaws -uninstall

Java 更新

我们倾向于忽略更新我们的 Java。^{(We tend to ignore updating our Java.)} 但非常重要的是，我们始终确保您使用的是最新版本的Java，因为Java中的漏洞经常被利用来破坏您的计算机。最新的Java版本包含重要的增强功能，以提高在您的机器上运行的Java应用程序的安全性、性能和稳定性。每当^(Whenever)检测到安全漏洞时，都会对其进行修补，因此您必须确保安装了最新版本的 java，因为它包含漏洞修复程序。

您可以通过单击更新^(Update)选项卡来配置Java更新设置。^(Java)

确保选中自动^{(Check for Updates Automatically)}检查更新。单击“高级^(Advanced)”按钮可让您设置更新检查的频率。

顺便说一句，我注意到我已经很久没有更新Java了。所以我点击立即^{(Update Now)}更新开始更新过程。这将启动juscheck.exe进程，该进程将检查是否有可用更新并相应地通知您。

单击安装^(Install)将开始更新过程。完成后，单击关闭^(Close)。

其他 Java 设置

Java选项卡允许您查看和管理Java应用程序和小程序的Java 运行时^{(Java Runtime)}版本和设置。

安全^(Security)选项卡可让您查看证书类型以识别您的身份。

高级^(Advanced)选项卡允许您配置其他设置。

卸载旧 Java 版本

在您的系统上保留旧的和不受支持的Java版本会带来严重的安全风险。

Older versions of SunJava (up to JRE 6 update 7) indeed did remain when updates were installed and need to be removed as the older versions of SunJava are highly vulnerable to Winfixer/Vundo. It took from 2005 until the update late last year to JRE 6 update 10 for SunMicrosystems to Sun Microsystems to get the autoupdater of SunJava to uninstall previous (vulnerable) versions of the program. Updates from JRE 6 Update 10 forward are in a self-contained “jre6” folder that is overwritten if a new JRE is installed. Even when using the most up-to-date version of SunJava, if older, vulnerable, version(s) are still on your computer, it is vulnerable to infection. Unfortunately, simply using Add/Remove programs to uninstall the old versions is not completely affective.

我们建议您尝试JavaRa。今天将Java^(Java)更新到最新版本后，我运行了JavaRa并用它来删除旧的Java版本。

它在我的计算机上检测到两个旧版本，然后我将其删除。

笔记。^(NOTE.)我的MVP同事和TWCF Mod Corrine补充说：JavaRa尚未更新以支持删除JRE 7并且似乎在JRE 6u32 之后^{(JRE 6u32)}遇到了麻烦。它已移至SingularLabs.com。此外，Paul McLain不再支持JavaRa，但Freð ðe Vries仍然支持。

Java 下载

您可以在此处^(here)从Java.com手动下载和安装适用于Windows的^(Windows)Java。

希望你在这篇文章中学到了一些新东西。如果您还有什么要补充的，请在评论部分进行。^{(Hope you have learned something new here in this post. If you have anything more to add, please do so in the comments section.)}

Manage Java Settings in Windows 11/10

Adobe Flash and Java are two downloads most of us have installed on our Windows computers, as they giνe us a richer internet and browsіng experiencе. We have already seen how to manage Adobe Flash Settingѕ. Τoday we will learn about Javа Settings in Windows 10/8/7.

What is Java

Java is a programming language and computing platform, which powers state-of-the-art programs including utilities, games, and business applications. It allows you to play online games, chat with people around the world, view images in 3D, and more.

Java Control Panel

Java software or the Java Runtime Environment is also referred to as the Java Runtime, Runtime Environment, Runtime, JRE, Java Virtual Machine, etc. It can be managed from the Java Control Panel. To access the Java Control Panel, open Control Panel and click on Java. Here you will be able to get information on the version number and also View the files.

Remove temporary Java files

When browsing the internet, whenever your browser uses Java, the Java files are stored in special folders for quicker execution later on.

To see the location of the folder and other details, click on the Settings button.

By default, these temporary java files are stored in the

C:\Users\Username\AppData\LocalLow\Sun\Java\Deployment\cache

folder in the JAR format. You can set the compression level for these JAR files and even set the amount to be set aside for storing these files.

To delete these temporary Java JAR files, click on Delete Files. Now you can select which files you wish to delete and click on OK.

Clear Java cache using command line

To clear Java cache using the command line, open a command prompt windows, type the following and press Enter:

javaws -uninstall

Java Update

We tend to ignore updating our Java. But it is very important that we always make sure that you are using the latest version of Java since vulnerabilities in Java are often exploited to compromise your computer. The latest Java version contains important enhancements to improve the security, performance, and stability of the Java applications that run on your machine. Whenever security holes are detected, they are patched, and it is therefore imperative that you ensure that you have the latest version of java installed as it includes vulnerability fixes.

You can configure the Java update settings by clicking on the Update tab.

Make sure that the Check for Updates Automatically is checked.  Clicking on the Advanced button will let you set the frequency of the update checks.

By the way, I noticed that it was a long time since I had updated Java. So I clicked on Update Now to start the update process. This starts the juscheck.exe process, which will check if an update is available and accordingly inform you.

Clicking on Install will start the update process. Once it is completed, click on Close.

Other Java settings

The Java tab lets you view and manage the Java Runtime versions and settings for Java applications and applets.

The Security tab lets you view the type of certificates to identify yourself.

The Advanced tab lets you configure other settings.

Uninstall Old Java versions

Keeping old and unsupported versions of Java on your system presents a serious security risk.

Older versions of SunJava (up to JRE 6 update 7) indeed did remain when updates were installed and need to be removed as the older versions of SunJava are highly vulnerable to Winfixer/Vundo. It took from 2005 until the update late last year to JRE 6 update 10 for SunMicrosystems to Sun Microsystems to get the autoupdater of SunJava to uninstall previous (vulnerable) versions of the program. Updates from JRE 6 Update 10 forward are in a self-contained “jre6” folder that is overwritten if a new JRE is installed. Even when using the most up-to-date version of SunJava, if older, vulnerable, version(s) are still on your computer, it is vulnerable to infection. Unfortunately, simply using Add/Remove programs to uninstall the old versions is not completely affective.

We suggest you try JavaRa. After updating Java to its latest version today, I ran JavaRa and used it to remove older Java versions.

It detected two older versions on my computer, which I then removed.

NOTE. My MVP colleague and TWCF Mod Corrine adds: JavaRa hasn’t been updated to support the removal of JRE 7 and seems to have trouble past JRE 6u32. It has moved to SingularLabs.com. In addition, Paul McLain no longer supports JavaRa, but Freð ðe Vries still does.

Java Download

You can download and install Java for Windows manually from Java.com here.

Hope you have learned something new here in this post. If you have anything more to add, please do so in the comments section.

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