When setcelleditor as jcombobox, change single combobox and affect the rest

Question

hi,
i contruct a jtable which set a particular column into a jcombobox editor but when i modify a single jcombobox, the rest of the combobox in the same column change accordingly also. May i know why? i set the editor like this
JComboBox box = new JComboBox();
box.addItem("No 1");
box.addItem("No 2");
TableColumn col1 = table.getColumnModel().getColumn(0);
col1.setCellEditor(new DefaultCellEditor(box));
May i know what is the problem of this?

Answer 1

The problem is solved already but i still do not understand why it will affect just 4 comboboxes at a time...It will not affect all. When i initialized a bean object, lets say the Customer
public class Customer {
String name;
String gender;
public void setName(String name) {...}
public void setGender(String gender) {...}
public String getName(){...}
public String getGender(){...}
}i did not provide the default value for the gender combobox.I initialized it like this
new Customer();
But there is no null or blank field in my combobox. So, it think the system cannot find the default value and set to whatever i modified to the first combobox. But the question is, if i have 8 rows, each row consists of 1 gender combobox, it only affect untill the 4th combobox, the 5th row and the rest is maintained, didnt change at all. This is very strange....nvm, the issue solved, and i would be happy to share my email and probably get ur example code for reference....
And, do u have any idea on how to set the celleditor and cellrenderer in a more OO way.....that means it is reusable and comform to some kind of design pattern. Currently the way i am doing is so not comfortable and ugly...and not reusable.
Thansk!