随题而学（五）OutputStream文件格式

OutputStream outputStream = new FileOutputStream(targetPath + File.separator + getBaseDataFileName(dataType, domain));        
        PrintStream ps=new PrintStream(outputStream);
        ps.printf("%1$s	 %2$15s	 %3$15s
", "ID", "中文名称", "英文名称");

OutputStream输出文件需要格式时，可以结合PrintStream来增加格式