Conditional EventHandler

Question

Can I make anonymous event handler method to act conditional like

JButton activeDataBtn = new JButton("Active");
activeDataBtn.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
    try { 
        if (activeDataPanel.setVisible(false)) { //Erroneous code 
            readDataFromFile();  //a method reads data from .csv
                               //file and shows it on activeDataPanel
            activeDataPanel.setVisible(true);
         }
     else 
         activeDataPanel.setVisible(false);   
     }
  }
 });

how can i make this conditional?

Any suggestions appriciated – Ashford Tulgaa Mar 14 '17 at 15:11 — Ashford Tulgaa, Mar 14 '17 at 15:11

score 1 · Accepted Answer · answered Mar 14 '17 at 15:12

Sure you can, but that code is not valid:

if (activeDataPanel.setVisible(false))

maybe you want to check if your panel is visible try it this way:

if (activeDataPanel.isVisible())

or maybe activeDataPanel.getVisible() I'm not sure about the getter name for it right now :)

Conditional EventHandler

1 Answers1