在Eclipse中定位JRE [英] Target JRE in Eclipse

问题描述

我应该如何在Eclipse中更改Target JRE。我之前使用的是jdk1.7，现在我想使用JDK 1.6。但是在运行我的java程序时，我得到了不支持的类版本错误。在使用jdk1.6之前是否需要进行一些设置。我应该如何确保我的eclipse编译并仅在jdk1.6中运行。

How should I change Target JRE in Eclipse. I was earlier using jdk1.7, now I want to use JDK 1.6. But while running my java program I am getting Unsupported Class Version Error. Is there some setting that I need to do before using jdk1.6. How should i make sure that my eclipse compiles and runs only in jdk1.6.

推荐答案

如果项目已经开始JDK 1.6，您还必须更改项目级别设置，因此：

If the project has been already started with JDK 1.6, you have to change also the project level settings, so :

Project ---> Properties ---> Java Compiler : set compliance level and Source compatibility to 1.7

Project ---> Properties ---> Java Build Path ---> Libraries ---> and change the JRE system library to 1.7

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