eclipse 新建workspace , 编译时出现 No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? 错误

解决方法 ： 

 

 

 

来源 ： https://stackoverflow.com/questions/19655184/no-compiler-is-provided-in-this-environment-perhaps-you-are-running-on-a-jre-ra