package script;import java.io.File;import java.io.IOException;public class Realname { public static void main(String[] args) throws IOException  {   File oldFile = new File("d:/PMS");  if(!oldFile.exists())  {   oldFile.createNewFile();  }  System.out.println("修改前文件名称是："+oldFile.getName());  String rootPath = oldFile.getParent();  System.out.println("根路径是："+rootPath);  File newFile = new File(rootPath + File.separator + "PMSTmp");  System.out.println("修改后文件名称是："+newFile.getName());  if (oldFile.renameTo(newFile))   {   System.out.println("修改成功!");  }   else   {   System.out.println("修改失败");  } }}