Jtext field How do i make bigger

HI,
Code below for inserting labels and text boxes.
The text box "patientNameField " seems to be small when form is launched.Only same size of cursor. How to i make this wider. Also what is the best way to postion all the elements on form rather than using ".setbounds."

import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.table.DefaultTableModel;
import javax.swing.border.TitledBorder;


class AddPatient
{

    public static void main(String[] args) 
    {
    	{
	 
    		//Set look and feel to NImbus.
    		try {
    		    for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels())
    		    	{
    		        if ("Nimbus".equals(info.getName())) {
    		            UIManager.setLookAndFeel(info.getClassName());
    		            break;
    		        }
    		    }
    	} catch (Exception  UnsupportedLookAndFeelException)
    		{
    		    // If Nimbus is not available
    			UIManager.getSystemLookAndFeelClassName();
    		}
	 
	 
	 
	 final JFrame frame = new JFrame("Add Patient form");
               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
               frame.setSize(1024,768);

                final JPanel addPatientgui =  new JPanel(new BorderLayout(5,5));
                addPatientgui.setBorder( new TitledBorder("Enter new patient details") );
                
                JLabel lmain,ldi,lname,ladd,ltel,lspecial,ldid,ldspec,lwork,lworkfrom,lworkto,lfee;
            	JTextField patientNameField,tfname,tftel,tfdid,tfworkf,tfworkt,tffee;
            	TextArea taadd,tacur,taspecial;
                
               // lmain = new JLabel("Patient Information");
            	//lmain.setBounds(440,35,107,15);
            	//addPatientgui.add(lmain);   
                
            	

            	ldi=new JLabel("Patient Information");
            	ldi.setBounds(40,70,120,15);
            	addPatientgui.add(ldi);

            	lname=new JLabel("Name :");
            	lname.setBounds(104,97,70,25);
            	addPatientgui.add(lname);

            	
            	patientNameField = new JTextField();
            	patientNameField.setPreferredSize(new Dimension(70, 50));
            	patientNameField.setHorizontalAlignment(0);
            	patientNameField.setMaximumSize( patientNameField.getPreferredSize() );
            	addPatientgui.add(patientNameField);
            	patientNameField.setBounds(270,97,250,20);
            	
            	

            	ladd=new JLabel("Address :");
            	ladd.setBounds(104,138,70,15);
            	addPatientgui.add(ladd);

            	//taadd=new TextArea();
            	//taadd.setBounds(270,138,250,100);
            	//addPatientgui.add(taadd);
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                frame.setContentPane(addPatientgui);

               // frame.pack(); /* window to be sized to fit the preferred size of its sub components */
              
                // place window in center of screen 
                frame.setLocationRelativeTo(null);
                try {
                    // 1.6+
                	
                    frame.setLocationByPlatform(true);
                    frame.setMinimumSize(frame.getSize());
                } catch(Throwable ignoreAndContinue) {
                }

                frame.setVisible(true);
    
    	}
    }
}