飞机大战（关于JavaFX注意点）

JavaFX:

StackPane stackPane=new StackPane();	
stackPane.setManaged(false);
stackPane.setMaxSize(PaneWidth, PaneHeight);
stackPane.setMinSize(PaneWidth, PaneHeight);
stackPane.setAlignment(Pos.TOP_LEFT);
		

hero0.setFitWidth(40);
hero0.setPreserveRatio(true);

hero0.setTranslateX(30);/////////////////////////////////////////////
hero0.setTranslateY(600);

打印：

System.out.println(hero0.getBoundsInParent().getMaxX());

BoundingBox [minX:30.0, minY:600.0, minZ:0.0, width:40.0, height:51.134033203125, depth:0.0, maxX:70.0, maxY:651.134033203125, maxZ:0.0]

System.out.println(hero0.getBoundsInParent());

BoundingBox [minX:30.0, minY:600.0, minZ:0.0, width:40.0, height:51.134033203125, depth:0.0, maxX:70.0, maxY:651.134033203125, maxZ:0.0]

子类从父类继承的属性：可见性为？