从另一个paintComponent方法调用paintComponent方法

Question

调用下面的painComponent方法是正确的：

public class CustomComponent{
   private AnotherCustomComponent anotherComponent;
   @override
   protected void paintComponent(Graphics arg0) {
        super.paintComponent(arg0);
        anotherComponent.paintComponent(arg0);
        arg0.fillRect(100, 100, 50, 150);
   }
}