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i using eclipse & swing create project. trying populate jtable. i've fetched values database in method display_userinfo_in_jtable().
but not know how use method populate jtable. think method should have return type this, not know how can it?
package view; import controller.*; import java.awt.eventqueue; import java.sql.connection; import java.sql.preparedstatement; import java.sql.resultset; import java.util.arraylist; import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.jscrollpane; import javax.swing.jtable; import javax.swing.table.defaulttablemodel; public class tableview { private jframe frame; private jtable table; /** * launch application. */ public static void main(string[] args) { eventqueue.invokelater(new runnable() { public void run() { try { tableview window = new tableview(); window.frame.setvisible(true); } catch (exception e) { e.printstacktrace(); } } }); } private arraylist<userinfo> userinfolist() { try { userinfo userinfo; arraylist<userinfo> userinfolist = new arraylist<userinfo>(); connection sqlcon = db_con.getsqlconnection(); preparedstatement ps = sqlcon.preparestatement("select id,name,username,contact,gender temp"); resultset rs = ps.executequery(); while(rs.next()) { userinfo = new userinfo( rs.getint("id"), rs.getstring("name"), rs.getstring("username"), rs.getstring("contact"), rs.getstring("gender") ); userinfolist.add(userinfo); } return userinfolist; } catch(exception ex) { system.out.println(ex.tostring()); return null; } } public void display_userinfo_in_jtable() { try { arraylist<userinfo> list = userinfolist(); defaulttablemodel dtm = new defaulttablemodel(); object row[] = new object[5]; for(int = 0 ; < list.size(); i++) { row[0] = list.get(i).getid(); row[1] = list.get(i).getname(); row[2] = list.get(i).getusername(); row[3] = list.get(i).getcontact(); row[4] = list.get(i).getgender(); dtm.addrow(row); } table.setmodel(dtm); } catch(exception ex) { system.out.println(ex.tostring()); } } /** * create application. */ public tableview() { initialize(); display_userinfo_in_jtable(); } /** * initialize contents of frame. */ private void initialize() { frame = new jframe(); frame.setbounds(100, 100, 598, 402); frame.setdefaultcloseoperation(jframe.exit_on_close); frame.getcontentpane().setlayout(null); jpanel panel = new jpanel(); panel.setbounds(10, 11, 562, 341); frame.getcontentpane().add(panel); panel.setlayout(null); table = new jtable(); //table.setbounds(49, 163, 92, -97); jscrollpane jsp = new jscrollpane(table); panel.add(table); } } i've added table.setmodel(dtm); in method display_userinfo_in_jtable(), still can not result.
there many problems code :
- coding , naming conventions
- the
displayuserinfoinjtable()never gets called (or atleast haven't posted code) - the table model isn't supposed coded way
- there no column identifiers, rows
- you have used absolute layout (layout set null) bounds negative -97, main issue
for point 5, either use standard layout or set bounds accordingly.
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