Les interactions entre les fenêtres graphiques en java

import java.awt.Component;
import java.util.TreeMap;

public class Cache
{
    private static TreeMap<String, Component> map = new TreeMap<String, Component>();
    
    public static Component put(String name, Component component)
    {
        return map.put(name, component);
    }
    
    @SuppressWarnings("unchecked")
    public static <E extends Component> E get(String name)
    {
        return (E) map.get(name);
    }
    
    public static boolean contains(String name)
    {
        return map.containsKey(name);
    }
    
    public static boolean contains(Component component)
    {
        return map.containsValue(component);
    }
    
    public static boolean instanceOf(String name, Class<? extends Component> clazz)
    {
        return clazz.isInstance(map.get(name));
    }
    
    public static Component remove(String name)
    {
        return map.remove(name);
    }
}

public static void main(String[] args)
{
    JFrame frame1 = new JFrame();
    Cache.put("frame1",frame1);

    JFrame frame2 = new JFrame();
    Cache.put("frame2",frame2);
}

@Override
public void actionPerformed(ActionEvent e)
{
    JFrame frame1 = Cache.get("frame1");
    JFrame frame2 = Cache.get("frame2");
    frame1.setVisible(false);
    frame2.setVisible(true);
}