Reverting color change in Jbutton when another Jbutton selected

Question

My GUI has a list of filtered entries from a db file. For each entry, I have a select Jbutton which shows more details for each entry.

What I am trying to achieve is to have the select JButton change color when pressed, and revert to original color when another entry's button is selected.

The code I have at the moment will change the selected color's button just fine, but remains the same color when another entry's Details button is selected:

//within for loop for each object in database
        JButton selectedButton = new JButton("Details"); 
        selectButton.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                entry.vehicleSelected(); 
                if(e.getSource() instanceof JButton )
                    ((JButton)e.getSource()).setBackground(Color.RED); 
                    ((JButton)e.getSource()).setOpaque(true);
                    ((JButton)e.getSource()).setContentAreaFilled(false);
            }}); 

How can I change the code so I can get this effect?

Answer 1

You can introduce a field JButton buttonToReset where the last pressed button is saved and use it

public void actionPerformed(ActionEvent e) {
            entry.vehicleSelected(); 
            if(e.getSource() instanceof JButton )
                ((JButton)e.getSource()).setBackground(Color.RED); 
                ((JButton)e.getSource()).setOpaque(true);
                ((JButton)e.getSource()).setContentAreaFilled(false);
                if (buttonToReset!=null) {
                    buttonToReset.setBackground(UIManager.getColor("Button.background"));
                }
                buttonToReset = ((JButton)e.getSource());
        }});