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如何启用Java

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下载PDF文件

Java是一种通常用于网站和应用程序的编程语言和平台。在没有启用Java的情况下，你可能会在使用特定网站和应用程序时遇到麻烦。要使用Java，你必须通过Java控制面板和浏览器启用其附加组件。参考以下步骤了解如何在控制面板和你的首选浏览器中启用Java。

方法 1

方法 1 的 6:

在Microsoft Windows上启用Java

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{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/5\/58\/Enable-Java-Step-2-Version-4.jpg\/v4-460px-Enable-Java-Step-2-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/58\/Enable-Java-Step-2-Version-4.jpg\/v4-728px-Enable-Java-Step-2-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/6\/69\/Enable-Java-Step-3-Version-4.jpg\/v4-460px-Enable-Java-Step-3-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/69\/Enable-Java-Step-3-Version-4.jpg\/v4-728px-Enable-Java-Step-3-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/c\/cc\/Enable-Java-Step-4-Version-4.jpg\/v4-460px-Enable-Java-Step-4-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/cc\/Enable-Java-Step-4-Version-4.jpg\/v4-728px-Enable-Java-Step-4-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/d\/d0\/Enable-Java-Step-5-Version-4.jpg\/v4-460px-Enable-Java-Step-5-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d0\/Enable-Java-Step-5-Version-4.jpg\/v4-728px-Enable-Java-Step-5-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/d\/d0\/Enable-Java-Step-6-Version-4.jpg\/v4-460px-Enable-Java-Step-6-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d0\/Enable-Java-Step-6-Version-4.jpg\/v4-728px-Enable-Java-Step-6-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/2\/2e\/Enable-Java-Step-7-Version-4.jpg\/v4-460px-Enable-Java-Step-7-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/2e\/Enable-Java-Step-7-Version-4.jpg\/v4-728px-Enable-Java-Step-7-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

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方法 2

方法 2 的 6:

在Mac OS X中启用Java

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{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/c\/cb\/Enable-Java-Step-9-Version-2.jpg\/v4-460px-Enable-Java-Step-9-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/cb\/Enable-Java-Step-9-Version-2.jpg\/v4-728px-Enable-Java-Step-9-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/b\/be\/Enable-Java-Step-10-Version-2.jpg\/v4-460px-Enable-Java-Step-10-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/be\/Enable-Java-Step-10-Version-2.jpg\/v4-728px-Enable-Java-Step-10-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/4\/4a\/Enable-Java-Step-11-Version-2.jpg\/v4-460px-Enable-Java-Step-11-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/4a\/Enable-Java-Step-11-Version-2.jpg\/v4-728px-Enable-Java-Step-11-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/b\/b8\/Enable-Java-Step-12-Version-2.jpg\/v4-460px-Enable-Java-Step-12-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b8\/Enable-Java-Step-12-Version-2.jpg\/v4-728px-Enable-Java-Step-12-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/2\/2d\/Enable-Java-Step-13-Version-2.jpg\/v4-460px-Enable-Java-Step-13-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/2d\/Enable-Java-Step-13-Version-2.jpg\/v4-728px-Enable-Java-Step-13-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

新的Java控制面板设置将被保存。
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/5\/52\/Enable-Java-Step-14-Version-2.jpg\/v4-460px-Enable-Java-Step-14-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/52\/Enable-Java-Step-14-Version-2.jpg\/v4-728px-Enable-Java-Step-14-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

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方法 3

方法 3 的 6:

在Microsoft Internet Explorer中启用Java

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{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/d\/d9\/Enable-Java-Step-16-Version-4.jpg\/v4-460px-Enable-Java-Step-16-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d9\/Enable-Java-Step-16-Version-4.jpg\/v4-728px-Enable-Java-Step-16-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/5\/5b\/Enable-Java-Step-17-Version-4.jpg\/v4-460px-Enable-Java-Step-17-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/5b\/Enable-Java-Step-17-Version-4.jpg\/v4-728px-Enable-Java-Step-17-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/2\/27\/Enable-Java-Step-18-Version-4.jpg\/v4-460px-Enable-Java-Step-18-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/27\/Enable-Java-Step-18-Version-4.jpg\/v4-728px-Enable-Java-Step-18-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

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方法 4

方法 4 的 6:

在Google Chrome中启用Java

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plugins"。
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/d\/d1\/Enable-Java-Step-20-Version-3.jpg\/v4-460px-Enable-Java-Step-20-Version-3.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d1\/Enable-Java-Step-20-Version-3.jpg\/v4-728px-Enable-Java-Step-20-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

如果该链接显示"禁用"的话将无需进行任何操作。

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方法 5

方法 5 的 6:

在Mozilla Firefox中启用Java

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{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/f\/f1\/Enable-Java-Step-22-Version-4.jpg\/v4-460px-Enable-Java-Step-22-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f1\/Enable-Java-Step-22-Version-4.jpg\/v4-728px-Enable-Java-Step-22-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

附加组件管理器将在新标签中打开。
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{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/c\/cf\/Enable-Java-Step-24-Version-4.jpg\/v4-460px-Enable-Java-Step-24-Version-4.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/cf\/Enable-Java-Step-24-Version-4.jpg\/v4-728px-Enable-Java-Step-24-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

如果该按钮显示"禁用"将无需进行任何操作。

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方法 6

方法 6 的 6:

在Apple Safari中启用Java

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{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/f\/fd\/Enable-Java-Step-26-Version-3.jpg\/v4-460px-Enable-Java-Step-26-Version-3.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/fd\/Enable-Java-Step-26-Version-3.jpg\/v4-728px-Enable-Java-Step-26-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/c\/c0\/Enable-Java-Step-27-Version-3.jpg\/v4-460px-Enable-Java-Step-27-Version-3.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c0\/Enable-Java-Step-27-Version-3.jpg\/v4-728px-Enable-Java-Step-27-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/e\/e0\/Enable-Java-Step-28-Version-3.jpg\/v4-460px-Enable-Java-Step-28-Version-3.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/e0\/Enable-Java-Step-28-Version-3.jpg\/v4-728px-Enable-Java-Step-28-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"}

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小提示

如果你使用的设备不是计算机，而是像平板电脑、智能手机或者游戏控制台这样的设备，这样的设备可能不支持Java插件。直接咨询你的产品的生产商确定你的设备是否支持Java。
如果按照上述步骤操作后，你仍然无法运行Java，，你可能需要安装更新版本的Java。要下载最新版本的Java，可以点击本文下方来源部分给出的Java链接，并从登录页中选择"下载"。然后按照指引即可完成Java的安装过程。

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