java - write content to file

File pFile = new File("C:\\desktop\\客户记录");//文件夹
pFile.mkdirs();
File fileRec = new File(pFile,"customer.txt");//例如需要向customer.txt写入
if(!(fileRec.exists()))
    fileRec.createNewFile();

PrintWriter out  = new PrintWriter(new FileWriter(fileRec,true));//每次向文件中写入内容添加在末尾，不覆盖之前内容
out.println("…");