How to determine whether a multi-level path exists in java and create it if it does not exist

public boolean isexitsPath(String path)throws InterruptedException{
      String [] paths=path.split("\\\\");
      StringBuffer fullPath=new StringBuffer();      
      for (int i = 0; i < paths.length; i++) {
                fullPath.append(paths[i]).append("\\\\");          
                File file=new File(fullPath.toString());          
                if(paths.length-1!=i){//判断path到文件名时，无须继续创建文件夹！              
                    if(!file.exists()){
                        file.mkdir();                  
                        System.out.println("创建目录为："+fullPath.toString());                  
                        Thread.sleep(1500);              
                        }          
                }      
      }      
                        File file=new File(fullPath.toString());//目录全路径      
                        if (!file.exists()) {          
                            return true;      
                        }else{
                            return false;      
                        }  
}