How to find out if a panel contains a specific component

Question

I am in a situation where i need to know whether a panel contains a specific component or not, like is there a specific method for that.
To clarify, example :
Suppose i have a panel
JPanel p1;
p1 = new JPanel();
JLabel label = new JLabel("LABEL");
p1.add(label);In this code i already know that p1 contains label, however at runtime, i would like to know if p1 contains label or not (assuming i removed the label at some point)

Answer 1

verminator wrote:
I thought that should have done the trick, and maybe it will, but did i do something wrong here :
JPanel p1 = new JPanel();
JLabel l1 = new JLabel("LABEL");
p1.add(l1);
if(isDescendingFrom(l1,p1))          //error here
System.out.println("true");
else
System.out.println("false");
}do you have to import some other package other than javax.swing.SwingUtilities for this method, because i'm getting an error "cannot find symbol" referring to the isDescendingFrom() methodSwingUtilities isn't a package, it's a class. isDescendingFrom() is a static method in that class.
To call isDescendingFrom(), it should look like this:
SwingUtilities.isDescendingFrom(c1, c2);