Writing in a text File is appending some SPECIAL Symbol on using any StringBuffer with \n

[buntha Choudhary]

I am using this piece of code to write some Strings in a Text File , but on using the newLine() , it is adding some INVALID Charatcters
nation[#]patry[#^]like

It is not appending the text to the next line , and in the same line replacing the next line with some unknown charaters.
I am appending the values in stringBuffer with a next line("\n") after each string.

THIS SCENARIO IS COIMING IN FEW SYSTEMS. IN SOME SYSTEM IT IS WORKING FINE BUT IN SOME IT IS RASING

   StringBuffer MainFileContentBuffer = new StringBuffer();
				
				
				
				MainFileContentBuffer.append(ProjCodeField.getSelectedItem().toString());
				MainFileContentBuffer.append("\n");
                                MainFileContentBuffer.append(CriticalField.getSelectedItem().toString());
				MainFileContentBuffer.append("\n");

                                out = new BufferedWriter(new FileWriter(MainTicketContentFile,true));
				out.write(MainFileContentBuffer.toString());
				out.newLine();
				out.flush();

[Joe Ess]

The end of line character is platform-specific. '\n' (0x0A) is the end-of-line character for Unix systems. Windows systems use "\r\n" (0x0D 0x0A). Java methods like BufferedWriter.newLine() and System.getProperty("line.separator") are provided to utilize or obtain the current system's end-of-line character.