myeclipse 10 j安装了JDK1.7,java编译器无法选择到1.7的问题
1,windows下preferences→java→Installed JRES后面如图选择你安装的JDK1.7;2windows下preferences→myeclipse→server→tomcat→选择你安装的tomcat展开选择JDK1.7,换上你安装的JDK,如图3右键工程preferences→java build path→libraries→JRE System ...