Automatic Refresh of JComboBox Implementation

Question

After the user logs in the "Student Management System" using "system" and "password" you get to view Student details. Also you get to choose a Student to delete or modify from the Combo box on the right hand top. When I select a student and delete using the delete button it gets deleted in the databse but how do i autorefresh the same in the Select student combobox...
I was not able to implement it...The code needs to be implemented in the ButtonHandler Classs. The snippet is as shown below
else if(s.equals("DELETE")){
                              int returnValue  = JOptionPane.showConfirmDialog(null, "Delete Confirmation",
                                                       "Are you sure you wanna delete", JOptionPane.YES_NO_OPTION);
                              if(returnValue == JOptionPane.YES_OPTION){
                                   selectedStudentname = jcmbStudentName.getSelectedItem().toString();
                                   String student_regNo= selectedStudentname.substring(0,7);
                                     deleteStudentRecord(student_regNo);
/*               JCOMBOBOX Refreshing Student Combo logic not implemented yet                    
*                jcmbStudentName.addItem("Select Student Name");
                                  PopulateStudentCombo();*/
/code]
Note:  PopulateStudentCombo() is a function used to populate the ComboBox.
The entire code for the above project is available at
[url] http://www.java-swing-tutorial.com/student.zip [/url]
Database Created in Oraclecreate table student_details (
     reg_no VARCHAR(30),
     name     VARCHAR(30),
     address     VARCHAR(50),
     fname     VARCHAR(30),
     dob     VARCHAR(30),
     phone     INTEGER,
     gender     VARCHAR(2),
     year     VARCHAR(30),
     course     VARCHAR(30),
     degree     INTEGER,
     charcert INTEGER,
     ncccert     INTEGER
create table student_login (
     login VARCHAR(30),
     password VARCHAR(30)
insert into student_login values('system', 'password');
These are the Database Specific settigns for JDBC
static String userid="scott", password = "tiger";
static String url = "jdbc:odbc:bob";     

Answer 1

You have to manually remove the item from the combo box. Read the API. There are a couple of "remove..." methods you can use.