无法删除多个选定对象

Question

我试图通过按SHIFT键选择多个对象，然后右键单击并选择删除选项，它应该能够删除所有选定的对象。

然而，它没有用。

我的代码如下。

鼠标点击

clickShape = null;
int x = clickEvent.getX(); // x-coordinate of point where mouse was
                                        // clicked
int y = clickEvent.getY(); // y-coordinate of point
        // when press down shift key
if (clickEvent.isShiftDown()) {
    for (int i = 0; i < shapes.size(); i++) {
        Shape s = (Shape) shapes.get(i);
        if (s.containsPoint(x, y)) {
            s.setColor(Color.RED);
            multiShape.add(s);

        }

    }

DeleteSelection

else if (command.equals("Delete Selection")) {
        for (Shape s : multiShape)// look for multishape size
            shapes.remove(multiShape);
}// remove selectedmultiple object.

Answer 1

应该是

shapes.remove(s); 

不是

shapes.remove(multiShape);

您应该通过shape s移除方法以从形状shape s移除ArrayList

java.util.ArrayList.remove(Object) // this is the method you are using .