can you change all this thing (JCheckBox) go to array and loop?

Question

I am doing some GUI and I use JCheckBox. I am wondering if this all can be do in an array and loop? It's so tiring to change every single thing.

If you can help me I'd love to hear.

if (box1.isSelected())
    k = 40;
if (box2.isSelected())
    l = 30;
if (box3.isSelected())
    m = 20;
if (box4.isSelected())
    n = 10;
if (box5.isSelected())
    o = 10;
if (box6.isSelected())
    p = 10;
if (box7.isSelected())
    q = 10;
if (box8.isSelected())
    r = 10;
if (box9.isSelected())
    j = 10;
if (box10.isSelected())
    i =10;

s = "Price for this is RM" + 
        (k + l + m + n + o + p + q + r + j + i);

JOptionPane.showMessageDialog(null, s);

Actually you need an `array` **and** a `loop`. Create array of your `JCheckBox` objects and calculate your total iterating trough this array. — PM 77-1, Aug 21 '14 at 23:56
if the normal one i know something like int[] num = new num[10]; — Lukman Al Hakim, Aug 22 '14 at 00:01
See [Array of Objects](http://www.javawithus.com/tutorial/array-of-objects) and [Processing Arrays using Loops](http://www.javawithus.com/tutorial/processing-arrays-using-loops). That should be enough to get you going. — PM 77-1, Aug 22 '14 at 00:07

score 2 · Answer 1 · answered Aug 22 '14 at 00:02

2

What you probably want is this:

JCheckBox[] checkboxesArray = new JCheckBox[10];
int i, count;

for (i=0; i<10; i++){
    /* display a checkbox... */

/* Finished displaying checkboxes, now you wait for user to finish input... */

for (i=0; i<10; i++){
    if (checkboxesArray[i].isSelected())
        count += 10;
}
s = "Price for this is RM " + count;
JOptionPane.showMessageDialog(null, s);

answered Aug 22 '14 at 00:02

and the input for each box ? where i need to put ? – Lukman Al Hakim Aug 22 '14 at 00:14
@LukmanAlHakim: you should display the checkboxes where I put my first `for` loop, see the comments. You can reference them as checkboxesArray[i]. Then you could have something like a button, which, when clicked, would invoke the rest of the code. It's all easy to look up in the docs. – Aug 22 '14 at 00:16

can you change all this thing (JCheckBox) go to array and loop?

1 Answers1