platform independent separators in java

line separator (Windows: “\r\n”, UNIX: “\n”)

1. BufferedWriter newline()
2. System.lineSeparator()
3. System.getProperty(“line.separator”)

file separator file.separator（windows:”\”; unix:”/”)

1. BufferedWriter newline()
2. System.getProperty(“file.separator”)
3. File.pathSeparator

Annotation: In Windows: “D:\codehamster”, you can change it to “D:/codehamster” or “D:\\codehamster”