Adding an action listener to an array of checkboxes

[sam_ccld]

Hi,
In my program i have 6 arrays of checkboxes each array has 6 checkboxes

// declaring the arrays JCheckBox[] 
pre = new JCheckBox[7];  
JCheckBox[] expr = new JCheckBox[7]; 
 JCheckBox[] mot = new JCheckBox[7]; 
 JCheckBox[] res = new JCheckBox[7]; 
 JCheckBox[] dyn = new JCheckBox[7]; 
 JCheckBox[] appr = new JCheckBox[7];
// initialising the checkboxes
 for (int j=0 ; j<=6 ; j++){       
pre[j]  =  new JCheckBox("0"+j);
 expr[j] = new JCheckBox("1"+j);
mot[j]  =  new JCheckBox("2"+j);  
 res[j]  =  new JCheckBox("3"+j); 
 dyn[j]  =  new JCheckBox("4"+j);  
appr[j] = new JCheckBox("5"+j);  
}
 int top=170; int left=10;
for(int x=0;x<=6;x++){
 jPanel2.add(pre[x],     new XYConstraints(top+x*40, left, 30, 20)); 
jPanel2.add(expr[x],     new XYConstraints(top+x*40, left+20, 30, 18)); 
jPanel2.add(mot[x],     new XYConstraints(top+x*40, left+40, 30, 18)); 
jPanel2.add(res[x],     new XYConstraints(top+x*40, left+60, 30, 18)); 
jPanel2.add(dyn[x],     new XYConstraints(top+x*40, left+80, 30, 18)); 
jPanel2.add(appr[x],   new XYConstraints(top+x*40, left+100, 28, 19));
}

I want to add an Action Listener to each array of checkboxes, and I do not know how to do it, could anyone give me an example please
Your help is appreciated, many thanks in advance