Geometry 使用 buffer 方法 生成缓冲区，如何限定传入的diatance的单位为米？

Question

代码如下：

      JsonObject jsonObject = new JsonParser().parse("{\"type\":\"LineString\",\"coordinates\":[[120.10956868343928,32.28193041706498],[120.03266438656428,31.106393307689977]]}").getAsJsonObject();
            //再转JsonArray 加上数据头
        JsonArray jsonArray = jsonObject.getAsJsonArray("coordinates");
            Coordinate coorArr[] = new Coordinate[jsonArray.size()];
            for (int i = 0; i < jsonArray.size(); i++)
            {
                String pointArr[] = jsonArray.get(i).toString().replace("[", "").replace("]", "").split(",");

                if (pointArr != null && pointArr.length == 2)
                {   
                    Coordinate coord = new Coordinate(Double.parseDouble(pointArr[0]),Double.parseDouble(pointArr[1]));
                    coorArr[i]=coord;
                }
            }
                GeometryFactory geoFac = new GeometryFactory();
                LineString createLineString = geoFac.createLineString(coorArr);
                Geometry buffer = createLineString.buffer(100);
                System.out.println(buffer);
                Coordinate coord = new Coordinate(Double.parseDouble("120.10956868343929"), Double.parseDouble("32.28193041706498"));
                Point  point=geoFac.createPoint(coord);
                System.out.println( point.within(buffer));

createLineString.buffer(100); 这个 buffer方法，是传入一个double类型的diatance，找不到相关api，不知道这个值的单位，求问如果以米为单位怎么设定？是不是和这个方法的两个重载方法有关 buffer(distance, quadrantSegments)和buffer(distance, quadrantSegments, endCapStyle) 网上实在找不到相关api

Answer 1

除以100000就是米