重新实现paintComponent（Graphics g）

Question

Is possible change implementation of paintComponent(Graphics g) method of created component?

Usecase: (Simplified for 2 components)
1. Create 2 components JLabel jlabel1, JLabel jlabel2 in some black box.
2. Put them in to HashMap<String, Component> components , where first argument is id, and second are our components jLabel1, jlabel2.
This part is blackbox . Components are provided in this HashMap.
3. Load HashMap components, go over the components and get them from the map.
4. Here I need change paining method of provided componets from HashMap.

Note: Change in this case means rotation.
Note 2: I know how to do rotation. Problem is how to reimplement paint(resp paintComponent) method of already existing component to be able apply the code which will do the rotation . When components are provided as blackbox in hashmap.

IS THAT POSSIBLE?

Answer 1

You can create your own MyLabel extends JLabel . And override method paintComponent(Graphics g) . In your MyLabel component you can add flag to rotate or not label.

Answer 2

You can create a new class which extends a component and override the component's method in this class. Ex:

public class Label extends JLabel {
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
    }
}

Or, you can create a component and override its methods directly, ex:

JLabel l = new JLabel() {
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
    }
};