使用Java将日志文件解析为打印行

I am trying to parse a text file that I converted to a string already. The text I am trying to parse(This changes every time its generated) but always has 1 or more of the sections(Errors, Warnings, Compliance, Instructional) these lines Start with "Errors", "Warnings", "Compliance" or "Instructional".I am trying to parse a text file that I convert