List<Object> Mutual replacement List<Bean>

When the project encounters a scenario, it is necessary to convert List to List as the return value, and return different types of data according to different types, so use Object to receive

@Override
public List<Object> selectHouseList(Integer category, String userId) {
	  //获取当前用户信息
	  SysUser sysUser = sysUserService.getUserByToken(request);
	  List<Object> list = null;
	  if (category == 1) {//1-二手
	      list = convert(this.tWeidianUserHouseMapper.selectOldhouseList(sysUser.getId(), userId));
	  } else if (category == 2) {//2-新房
	      list = convert(this.tWeidianUserHouseMapper.selectNewhouseList(sysUser.getId(), userId));
	  } else if ( category == 3) {//3-租房
	      list = convert(this.tWeidianUserHouseMapper.selectRenthouseList(sysUser.getId(), userId));
	  } else if ( category == 4) {//4-小区
	      list = convert(this.tWeidianUserHouseMapper.selectCommunityList(sysUser.getId(), userId));
	  } else if ( category == 5) {//5-商业
	      list = convert(this.tWeidianUserHouseMapper.selectBusinessList(sysUser.getId(), userId));
	  }
	  
	  return list;
}

@SuppressWarnings("unchecked")
public static <T> List<T> convert(List<?> list) {
    return (List<T>)list;
}