java文件重命名(文件批量重命名)实例程序代码分享

public void reName(){
        String dir = "D:\\backup\\";
        File file = new File(dir);
        String fileName[] = file.list();
        int number = fileName.length;
        File newFile[] = new File[number];

        System.out.println("number = " + number);
        for(int i=0; i<number; i++) {
            System.out.println((i+1) + ":" + fileName[i]);
            newFile[i] = new File(dir+fileName[i]);
        }
        System.out.println("============分割线=============");
        for(int i=0; i<number;i++){
            boolean flag = newFile[number - (i+1)].renameTo(new File(dir + (i+1)+".bmp"));
            if(flag){
                System.out.println("重命名成功"+(i+1));
            } else {
                System.out.println("失败");
            }
        }
    }

/**
     *
     * @param from 保存需要修改的文件名数组
     * @param to  保存修改后的文件名数组
*/
    public void reName_1(String from[], String to[]){
        int fileLength = from.length;
        boolean flag = false;
        boolean isOk = false;
        int count = 0;
        if(fileLength != to.length){
            System.out.println("传入数组长度不一致，故不进行重命名操作");
            return;
        }else{
            for(int i=0;i<fileLength;i++){
                for(int j=0;j<fileLength;j++){
                    if(from[i].equals(to[j]) ){
                        flag = false;
                        System.out.println("error:存在相同文件名，系统拒绝重命名操作");
                        return;
                    }else{
                        flag = true;
                    }
                }
            }
            if(flag){
                System.out.println("开始进行文件重命名工作》》》");
                for(int i=0;i<fileLength;i++){
                    isOk = new File(from[i]).renameTo(new File(to[i]));
                    if(isOk){
                        System.out.println("弟" + (i+1) +"个文件重命名成功");
                        count++;
                    }
                }
                if(count == fileLength){
                    System.out.println("全部重命名成功");
                }else{
                    System.out.println("存在重命名未成功的文件，请人工查看更改");
                }
            }
        }
    }