Changing names of checkboxs without changing labels

Hello everyone out there hope all is going well. I have 2 questions here almost.

Question 1:
How could I change the names of the checkboxs 1-50 Code below: Code #1,  but not change the labels of the checkboxs named 1-50


Code #1

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

public class MyClass4 extends JPanel {

ArrayList myArrayList = new ArrayList();

// Constructor
public MyClass4() {
// JPanel myPanel = new JPanel(); // No JPanel - why do we need it? I'M a JPanel...
setLayout(new GridLayout(0,3)); // Setting MY layout...
looprow:
for (int row=0; row<20; row++) {
for(int col=0; col<3; col++) {
int n=(20*col+row+1);
if (n>50) break looprow;
JCheckBox check = new JCheckBox("" + n);

myArrayList.add(check);
add(check); // Adding it to ME
}
}
// myPanel.setLayout(new FlowLayout()); Why would I change the layout back to FlowLayout? All hell would break loose...
// add(myPanel); Don't need it at it's ME...
}
}



Question 2:


All of the following checkboxs I have added set ActionCommands to be audio files. The code below works for one set of checkboxs named 1-50.  How would this code be changed to work with the checkboxs name changes from the  Question above.



for(int i = 0; i < checkboxes.length; i++) {
     checkboxes[i].setActionCommand("kp" + (i + 1) + ".wav");
     choices.add(checkboxes[i]);//go through checkboxs and add them to choices
}