Java實現刪除目錄文件操作

	//1、第一種
	public static String deleteFile(String fileName){
        String filePath="E:/cityPro/city/sql/";
        String  file=filePath+fileName; 
        File del_file=new File(file);
        if(del_file.isFile() && del_file.delete()==true){
            return "成功";
        }else{
            return "失敗";
        }
    } 
    public static void main(String[] args) {
        System.out.println(deleteFile("20191023100757city.sql"));

    }
    
    //第二種
    public static boolean deleteFile(String filePath)
    {
        boolean flag = false;
        File file = new File(filePath);
        // 路徑爲文件且不爲空則進行刪除
        if (file.isFile() && file.exists())
        {
            file.delete();
            flag = true;
        }
        return flag;
    }