Thread: GUI not showing its J-elements???

Hi everyone,

I have created two classes, GUI class and PROVA class. When I run the DB class, it shows a frame, but not the text fields and other elements.

Can any of you notice any mistake in my code? Thanks in advance..


PROVA Class:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class prova {
 
 
 
 
 
Connection con;
Statement st;
ResultSet rs;
 
public prova () {
 
connect();
 
}
public void connect() {
 
try {
 
String driver = "sun.jdbc.odbc.Jdbc0dbcDriver";
Class.forName(driver);
 
String prova = "jdbc:odbc:db1";
con = DriverManager.getConnection(prova);
st = con.createStatement();
String sq1 = "select * from Table1";
rs = st.executeQuery(sq1);
 
while (rs.next())
 
{
 
String fname = rs.getString("Fname");
String lname = rs.getString("Lname");
String age = rs.getString("Age");
System.out.println(fname + " " + lname + " " + age);
}
 
}catch(Exception e){
}
}
 
public static void main(String[] args) {
 
new prova();
new gui();
 
 
}
}

GUI Class

import javax.swing.*;
import java.awt.*;
 
public class gui {
 
	JFrame f;
	JLabel fname;
	JLabel lname;
	JLabel age;
	JTextField t;
	JTextField t1;
	JTextField t2;
 
 
 
	public gui() {
 
		frame();
 
		}
 
	public void frame() {
 
		f = new JFrame ();
		f.setVisible(true);
		f.setSize (600,400);
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
		fname = new JLabel ("First Name");
		lname = new JLabel ("Last Name");
		age = new JLabel ("Age");
 
		t = new JTextField(10);
		t1 = new JTextField(10);
		t2 = new JTextField(10);
 
		JPanel p = new JPanel();
		p.add(fname);
		p.add(t);
		p.add(lname);
		p.add(t1);
		p.add(age);
		p.add(t2);
 
		f.add(p);
 
 
 
	}
 
 
 
}