How can chang jpanel or replace the jpanel in java swing?

Question

i want chang the by click a button if i click again jpanel come back?

Answer 1

how explain more or write it code

Answer 2

Toggle the panel visibility using setVisible(true/false) method.

Answer 3

Example: if you had a panel variable called "myPanel" you can just do

myPanel.setVisible(true);

This will make you panel stay visible. If you need hide it use

myPanel.setVisible(false);

then your panel will get hidden.

To do do this by clicking a button you can create a button and write logic inside its "actionListener", such as

myButton.addActionListener(new ActionListener(){
//your logic of toggle visibility goes here...
});

You need look that you should check if your panel are visible or not before hiding/showing it up. You only will hide if panel are being shown and will only show if panel are hidden. To check this you can use the boolean method "isVisible()" such as:

if (myPanel.isVisible()){
myPanel.setVisible(false);
} else {
myPanel.setVisible(true);
}

or in a single line

myPanel.setVisible(!myPanel.isVisible());

Hope you understand. GL