Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.help > #2324

Long delay when using JComboBox.setSelectedIndex() ??

Show all headers | View raw

Hello,

I am attempting to load 5000 employee items into a jcombobox, and then setSelectedIndex, but I am getting a odd delay in the gui after setting the selectedIndex

1) If I load the 5000 employee names using a simple vector, it works fine. When I call setSelectedIndex(5), it sets the combobox to the 5th element, very quickly. This works fine:

 while ((line = input.readLine()) != null) {
                StringTokenizer st = new StringTokenizer(line, "|");
                lastName = st.nextToken().trim();
                firstName = st.nextToken().trim();
                id = Integer.parseInt(st.nextToken().trim());
                 comboBoxItems.add(lastName);}
                
                mybox1.setModel(new javax.swing.DefaultComboBoxModel(model));
                mybox1.setSelectedIndex(5);


2)HOWEVER, if I load an employee object into a mapped vector, and then setSelectedIndex(5), I DO see it instantly set the GUI combobox to the 5th item, BUT then there is a LOOOONG delay in the gui (1 minute or more) before it allows me to do anything further in the gui

 while ((line = input.readLine()) != null) {
                StringTokenizer st = new StringTokenizer(line, "|");
                lastName = st.nextToken().trim();
                firstName = st.nextToken().trim();
                id = Integer.parseInt(st.nextToken().trim());
                empBuffer=  new Employee(id, lastName );
                map.put(empBuffer.getId()+"",empBuffer ); 
                count++; }
                
             model.addAll(map.values()); 
             Collections.sort(model); 
             mybox1.setModel(new javax.swing.DefaultComboBoxModel(model));
             mybox1.setSelectedIndex(5);


public class Employee implements Comparable { 
         private int id; 
         private String name; 

         public Employee(int id, String name) { 
             this.id = id; 
             this.name = name; 
         } 

         public String getName() { 
             return name; 
         } 

         public int getId() { 
             return id; 
         } 

         public int compareTo(Object emp) { 
             return getName().compareTo(((Employee)emp).getName()); 
         } 

         public String toString() { 
             return getName()+","+getId(); 
         } 
     } 

Back to comp.lang.java.help | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Long delay when using JComboBox.setSelectedIndex() ?? kedward777@gmail.com - 2012-12-05 09:27 -0800
  Re: Long delay when using JComboBox.setSelectedIndex() ?? kedward777@gmail.com - 2012-12-05 10:08 -0800
    Re: Long delay when using JComboBox.setSelectedIndex() ?? Lew <lewbloch@gmail.com> - 2012-12-05 10:35 -0800
      Re: Long delay when using JComboBox.setSelectedIndex() ?? kedward777@gmail.com - 2012-12-05 10:46 -0800
        Re: Long delay when using JComboBox.setSelectedIndex() ?? Lew <lewbloch@gmail.com> - 2012-12-05 11:31 -0800
        Re: Long delay when using JComboBox.setSelectedIndex() ?? Roedy Green <see_website@mindprod.com.invalid> - 2012-12-05 16:16 -0800
          Re: Long delay when using JComboBox.setSelectedIndex() ?? Lew <lewbloch@gmail.com> - 2012-12-05 16:34 -0800
            Re: Long delay when using JComboBox.setSelectedIndex() ?? Knute Johnson <nospam@knutejohnson.com> - 2012-12-05 16:40 -0800
              Re: Long delay when using JComboBox.setSelectedIndex() ?? Lew <lewbloch@gmail.com> - 2012-12-05 16:58 -0800
            Re: Long delay when using JComboBox.setSelectedIndex() ?? Roedy Green <see_website@mindprod.com.invalid> - 2012-12-06 15:32 -0800
              Re: Long delay when using JComboBox.setSelectedIndex() ?? Lew <lewbloch@gmail.com> - 2012-12-06 18:04 -0800
  Re: Long delay when using JComboBox.setSelectedIndex() ?? Knute Johnson <nospam@knutejohnson.com> - 2012-12-05 16:15 -0800
  Re: Long delay when using JComboBox.setSelectedIndex() ?? Gene Wirchenko <genew@telus.net> - 2012-12-12 18:15 -0800

csiph-web