Java 如何动态修改特征（如直线）的坐标？

我想改变一条线的坐标，并在飞行中用新坐标绘制它。虽然这些值可以更改，但我没有成功地使用新坐标重新绘制。
我的示例代码和跟踪输出在这里

TRACE-1:SimpleFeatureImpl:OSB_Line=[SimpleFeatureImpl.Attribute:the_geom=Multilinering（（32.56891053280672 39.98170079260158，32.5619576563663 39.98391357917568）），

TRACE-2:SimpleFeatureImpl:OSB_Line=[SimpleFeatureImpl.Attribute:the_geom=多行（（132.5689105328067 39.98170079260158，

public void modifySelectedFeatures(Set<FeatureId> idSet) {
    FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2(null);
    MapContent mapContent = mapFrame.getMapContent();
    FeatureLayer layer = (FeatureLayer) mapContent.layers().get(0);
    Filter filter = ff.id(idSet);
    try {
        SimpleFeatureCollection fColl = (SimpleFeatureCollection) layer.getFeatureSource().getFeatures(filter);
        if (!fColl.isEmpty()) {
            SimpleFeatureIterator iterator = fColl.features();
            while (iterator.hasNext()) {
                SimpleFeature simpleFeature = iterator.next();
                System.out.println("TRACE-1:" + simpleFeature);
                Geometry geom = (MultiLineString) simpleFeature.getDefaultGeometry();
                Coordinate c = geom.getCoordinates()[0];
                c.setCoordinate(new Coordinate(c.x + 100.0, c.y, c.z));
                simpleFeature.setDefaultGeometry(geom);
                System.out.println("TRACE-2:" + simpleFeature);
            }
        }
    } catch (IOException e) {
        e.printStackTrace();  
    }
    mapFrame.getMapPane().repaint();
}

public void modifySelectedFeatures（Set idSet）{
FilterFactory2 ff=CommonFactoryFinder.getFilterFactory2（null）；
MapContent MapContent=mapFrame.getMapContent（）；
FeatureLayer层=（FeatureLayer）mapContent.layers（）.get（0）；
过滤器过滤器=ff.id（idSet）；
试一试{
SimpleFeatureCollection fColl=（SimpleFeatureCollection）layer.getFeatureSource（）.getFeatures（过滤器）；
如果（！fColl.isEmpty（））{
SimpleFeatureIterator迭代器=fColl.features（）；
while（iterator.hasNext（））{
SimpleFeature SimpleFeature=iterator.next（）；
System.out.println（“TRACE-1:+simpleFeature”）；
几何图形几何图形=（多行线）simpleFeature.getDefaultGeometry（）；
坐标c=geom.getCoordinates（）[0]；
c、 设置坐标（新坐标（c.x+100.0，c.y，c.z））；
simpleFeature.setDefaultGeometry（geom）；
System.out.println（“TRACE-2:+simpleFeature”）；
}
}
}捕获（IOE异常）{
e、 printStackTrace（）；
}
mapFrame.getMapPane（）.repaint（）；
}