Android 是否支持 JDK 6 或 7
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Does Android support JDK 6 or 7
提问by user3084351
I am new to Android development. Can I use my existing Java code developed using JDK 7 in Android?
我是 Android 开发的新手。我可以在 Android 中使用使用 JDK 7 开发的现有 Java 代码吗？
The functions use xerces dom and xslt and xpathapi. Currently when I installed Android Eclipse ADT environment these functions are not compiling. I would also like to know whether an Android device itself supports JRE 6 or 7?
这些函数使用 xerces dom 和 xslt 以及 xpathapi。目前，当我安装 Android Eclipse ADT 环境时，这些功能无法编译。我还想知道 Android 设备本身是否支持 JRE 6 或 7？
回答by Mohamed El-Nakib
Originally Android development tools supported only jdk 6 features. But that was changed, first by Android Studio 0.3.2 in October 2013 see: http://tools.android.com/recent/androidstudio032released
原本Android开发工具只支持jdk 6特性。但这已经改变了，首先由 Android Studio 0.3.2 在 2013 年 10 月看到：http: //tools.android.com/recent/androidstudio032released
Support for language features like the diamond operator, multi-catch, try-with-resources, strings in switches, etc. When creating a new project, you can specify a source language level:
Note that you can use all these language features not just with Android KitKat, but with older versions of Android too! There is one exception to that: try-with-resources, which will require minSdkVersion 19. Therefore, Studio will flag any uses in your code of try-with-resources if your minSdkVersion is less than 19:
支持菱形运算符、多捕获、try-with-resources、开关中的字符串等语言功能。在创建新项目时，您可以指定源语言级别：
then by ADT plugin 22.6 in March 2014,see: http://developer.android.com/tools/sdk/eclipse-adt.html
然后在 2014 年 3 月通过 ADT 插件 22.6，参见：http: //developer.android.com/tools/sdk/eclipse-adt.html
Added support for Java 7 language features like multi-catch, try-with-resources, and the diamond operator. These features require version 19 or higher of the Build Tools. Try-with-resources requires minSdkVersion 19; the rest of the new language features require minSdkVersion 8 or higher. To use the new language features after installing ADT 22.6.0, ensure that you run Eclipse on JDK 7 and change your application project settings to use JDK 7.
添加了对 Java 7 语言功能的支持，例如 multi-catch、try-with-resources 和菱形运算符。这些功能需要版本 19 或更高版本的构建工具。Try-with-resources 需要 minSdkVersion 19；其余的新语言功能需要 minSdkVersion 8 或更高版本。要在安装 ADT 22.6.0 后使用新语言功能，请确保在 JDK 7 上运行 Eclipse 并将应用程序项目设置更改为使用 JDK 7。
Android is not intended to be 100% compatible with any Java SE API version, not 6 nor 8 nor any. this was the reason of the court case of Oracle raised Against Google, accusing Google of fragmenting Java. Some APIs are impossible to implement on android as Swing; Imagine a window with a close button on android ! Others were delayed but implemented : for e.g.: Charset class is in Java SE 1.4 but implemented in android API 9, AutoClosable in Java 7 implemented in Android API level 19 to allow implementation of try-with-resources language feature. Some APIs are existent but for different purpose as Console.
Android 不打算与任何 Java SE API 版本 100% 兼容，不是 6、8 或任何版本。这就是甲骨文公司提起对谷歌的诉讼，指控谷歌碎片化Java的原因。有些 API 不可能在 android 上实现为 Swing；想象一个在 android 上有一个关闭按钮的窗口！其他被延迟但已实现：例如：Charset 类在 Java SE 1.4 中实现，但在 android API 9 中实现，Java 7 中的 AutoClosable 在 Android API 级别 19 中实现，以允许实现 try-with-resources 语言功能。一些 API 是存在的，但与控制台的用途不同。
回答by blackpanther
Firstly, there is a difference between the Java JDK and the JRE. The JRE is the Java Runtime Environment while the JDK is the Java Development Kit. It is the JDK that you need for Android application development along with the existing Android SDK.
首先，Java JDK 和 JRE 之间存在差异。JRE 是 Java 运行时环境，而 JDK 是 Java 开发工具包。它是您开发 Android 应用程序所需的 JDK 以及现有的 Android SDK。
The Android SDK can use either JDK 6 or 7, however, it can ONLYuse the JDK 6 API.
Android SDK 可以使用 JDK 6 或 7，但是，它只能使用 JDK 6 API。
回答by Mina Fawzy
Yes , jdk 7 now support android Starting from build tools 19
是的，jdk 7 现在支持 android 从构建工具 19 开始
回答by Bruno Donath
JDK 5/6 ONLY. Actually andriod doesn't support jdk 6 completely because android jdk 6 is not Oracle JDK 6.
仅 JDK 5/6。实际上，andriod 并不完全支持 jdk 6，因为 android jdk 6 不是 Oracle JDK 6。
