How to Hide or remove a JLabel

I have declared a JLable as follows;

l = new JLabel("Hello");
l.setHorizontalAlignment(SwingConstants.CENTER);
panel.add(l);

Now, i want to hide or remove it. What should be the method i should call ?

i tried l.removeAll(); <--- nothing hapend.

there's another one calle remove(int) which takes an int. But i am not sure what to pass as the parameter.

There's also something called hide(). but it's deprecated.

i tried l.removeAll(); <--- nothing hapend.

you need to call to remove on JPanel which the JLabel was added to :

panel.remove(l);

//after that you need to call this to revalidate and repaint the panel
panel.revalidate(); 
panel.repaint();

just to hide and not to remove call

l.setVisible(false);

Try panel.remove(l);

panel.removeAll() should also work, but that also removes other components which may have been added to the pannel.

you can try:

setVisible(false)

This may help you

Hiding Label

l.setVisible(false);

Removing from parent with passing the Label object as argument

panel.remove(l);

Remove all components

panel.removeAll();

The javadoc of hide() tells setVisible() should be used instead. So try calling setVisible(false).

I faced the same problem in my project.

You should make sure about removing previous controls and refreshing the panel.

see this snippet code :

panel.removeAll();  


panel.revalidate();

Hope This Helps U All The Best :)

You have to use the method getContentPane(). This way is possible to remove the element by the declaration name of the component.

private JFrame frame;
private JLabel label;
...

frame.getContentPane().remove(label);

来源：https://stackoverflow.com/questions/13859348/how-to-hide-or-remove-a-jlabel

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