Fel測試異常Check that your class path includes tools

        Fel測試時在build path裏添加fel.jar和antlr.min.jar後運行，拋出異常 Exception in thread "main" java.lang.IllegalStateException: Cannot find the system Java compiler. Check that your class path includes tools.jar。這時添加jdk內置tools.jar時不能像以上兩個jar包同樣配置，而是：

    右擊全部project下的JRE System Libray-->Properties，在出來的界面上,點擊Installed JREs-->選中目錄如C:\Program Files\Java\jre1.8.0_60，在彈出的界面中點擊add External JARs,將jdk-lib-tools.jar加進去便可。