jdk和eclipse的下载安装

jdk和eclipse的下载

1. 1

   我们在百度上搜索，直接进入官网就可以下载了。

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   END

jdk的安装

1. 1

   打开jdk安装包，点击下一步。

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2. 2

   系统默认的是c盘，我们可以点击更改选择在其它盘里。然后点击下一步。

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3. 3

   等待其片刻。。。

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4. 4

   之后有提示安装jre位置的时候，我们可以和第一个选择jdk位置相同。

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5. 5

   安装之后我们点击关闭即可。

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   END

jdk环境变量的设置

1. 1

   jdk安装好后还要设置环境变量，这是很重要的。我们首先右键“计算机”，选择属性，点击高级系统设置。

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2. 2

   点击高级，然后点击环境变量。

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3. 3

   点击新建，在变量名处填上JAVA_HOME，在变量值处填上刚才安装jdk的位置，系统默认的安装位置是C:\Program Files\Java\jdk1.8.0_20，如果刚才没有更改就直接填上就行了，如果改了，就填上修改后的位置，例如我的是D:\jdk

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4. 4

   再点击新建，在变量名处填上CLASSPATH，在变量值处填上%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar，然后点击确定。

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5. 5

   然后在系统变量中找到path，点击编辑。这个大部分电脑都有，如果没有点击新建，然后在以前的变量值后添加%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin。

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6. 6

   然后点击确定。刚才开的前面几个页面也都点击确定。

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   END

验证是否设置环境变量成功

1. 1

   运行或搜索cmd

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2. 2

   输入java

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3. 3

   如果出现这样的提示那么就成功了。

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   END

安装eclipse

1. 1

   把压缩包解压后点击eclipse。

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2. 2

   我们可以选择保存位置。

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3. 3

   然后就可以愉快的编程了。

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   END

注意事项

• 注意环境变量的新建要正确，建议直接复制粘贴上去。
• 安装jdk时尽量不要修改位置，以免填错。