The type java.lang.CharSequence cannot be resolved
这个错误一般是由于需要JDK1.8, 但Eclipse或MyEclipse版本过低(本例中是MyEclipse6.0, 欲使用JDK1.8)
解决办法:升级MyEclipse, 或改用Eclipse
Java.报错:The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class files
原文：https://www.cnblogs.com/visionsl/p/12207867.html
