title: About JComboBox and JRadioButton
body: <p>I made a small program in wich when I select the one of the items in the combobox an image will appeare on the jlabel 1 on the right. 
   there are 2 JRadioButtons on the buttom of the JFrame and when i click one of the radiobuttons it will display the value of the image on jlabel 2. </p>
  
  <p>when the second radiobutton is clicked, it will display another value about the image on the jlabel 3 . 
   but the problem is when I select the second item in the combobox it will still display the old value of firts item on jlabel 2 and 3 . </p>
  
  <p>the question is how can I make it come to the default value automatically ( example: 0; ) when i select second item in the combobox. </p>
  
  <p>thanks. </p>