在java新版本中是否对Escape序列（\ r \ n，\ f，\ b）属性进行了任何修改

I don't know the exact use of \f - form feed escape sequence,so I searched some examples from that i come to know that it has been used for page break(Insert a form feed in the text at this point). So when I run the the following program,I got some different result for /f,/b and /r is there any reason? Share your opinion on this,Point out if I done anything wrong. java version "1.8.0_181"I don't know the exact use of \f - form feed es