public class FileRename {

	public String getNewFileName(String originalFileName) {  

        StringBuffer newFileName = new StringBuffer();  

        if (null != originalFileName && !"".equals(originalFileName)) {  

            int port = originalFileName.lastIndexOf(".");  

            String type = "";  

            String fileName = "";  

            if (port != -1) {  

                type = originalFileName.substring(port + 1);  

                fileName = originalFileName.substring(0, port);  

            } else {  

                fileName = originalFileName;  

            }  

            JsonDateValueProcessor jdvp = new JsonDateValueProcessor();

            JsonConfig jc = new JsonConfig();

            StringBuffer suffix = new StringBuffer("_");  

            suffix.append(jdvp.processArrayValue(new Date(), jc));  

            suffix.append("_");  

            suffix.append(new Random().nextInt(100));  

            newFileName.append(fileName);  

            newFileName.append(suffix);  

            newFileName.append(".");  

            newFileName.append(type);