Java修改文件夹下图片的名称详解编程语言

String realPath = "F:/Projects/prj_2010/test.jpeg"; 
String folderPath = realPath.substring(0, realPath.lastIndexOf("//")); 
File file = new File(folderPath); 
String dirPath = file.getAbsolutePath();//目录路径 
if (file.isDirectory()) { 
        File[] files = file.listFiles();//获取此目录下的文件列表 
        for (File fileFrom : files) { 
        String fromFile = fileFrom.getName();//得到单个文件名 
        if (fromFile.endsWith(".x")) { 
                 fromFile = fromFile.substring(0, fromFile.lastIndexOf(".x")); 
                 String toFileName = dirPath + "/" + fromFile; 
                 File toFile = new File(toFileName); 
                 if (fileFrom.exists() && !toFile.exists()) { 
                         //开始更名 
                         fileFrom.renameTo(toFile); 
                 } 
         } 
}