Samson_Ramirez-JFrame.Event

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Samson_Swing extends JFrame implements ActionListener{
    private Container con = getContentPane();

    FlowLayout fl = new FlowLayout();
    Font bFont = new Font("Arial", Font.BOLD, 20);
    JLabel lb1 = new JLabel("Enter Your Fullname: ");
    JTextField tf1 = new JTextField(18);
    JLabel lb2 = new JLabel("Enter Your Age: ");
    JTextField tf2 = new JTextField(18);
    JLabel lb3 = new JLabel("Enter Your Address: ");
    JTextField tf3 = new JTextField(18);
    JButton bt = new JButton("Send");
    JLabel lb4 = new JLabel();
    JLabel lb5 = new JLabel();
    JLabel lb6 = new JLabel();
    JLabel lb7 = new JLabel();
public Samson_Swing() {
    super("Message");
        setSize(600, 500);
        con.setLayout(fl);
        con.setBackground(Color.GRAY);
        lb1.setFont(bFont);
        lb2.setFont(bFont);
        lb3.setFont(bFont);
        lb4.setFont(bFont);
        lb5.setFont(bFont);
        lb6.setFont(bFont);
        lb7.setFont(bFont);
        add(lb1);
        add(tf1);
        add(lb2);
        add(tf2);
        add(lb3);
        add(tf3);
        add(bt);
        add(lb4);
        add(lb5);
        add(lb6);
        add(lb7);

     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     lb1.setPreferredSize(new Dimension(250,50));
     tf1.setPreferredSize(new Dimension(325,30));
     lb2.setPreferredSize(new Dimension(250,50));
     tf2.setPreferredSize(new Dimension(325,30));
     lb3.setPreferredSize(new Dimension(250,50));
     tf3.setPreferredSize(new Dimension(325,30));
     bt.setPreferredSize(new Dimension(200, 40));
     bt.setHorizontalAlignment(JButton.CENTER);
     lb4.setPreferredSize(new Dimension(375,50));
     lb5.setPreferredSize(new Dimension(375,50));
     lb6.setPreferredSize(new Dimension(375,50));
     lb7.setPreferredSize(new Dimension(375,50));
     lb4.setHorizontalAlignment(JLabel.CENTER);
     lb5.setHorizontalAlignment(JLabel.CENTER);
     lb6.setHorizontalAlignment(JLabel.CENTER);
     lb7.setHorizontalAlignment(JLabel.CENTER);
     lb4.setForeground(Color.BLACK);
     lb5.setForeground(Color.BLACK);
     lb6.setForeground(Color.BLACK);
     lb7.setForeground(Color.BLACK);
     bt.setBackground(Color.BLACK);
     bt.setForeground(Color.YELLOW);
     bt.setToolTipText("Click to Submit");
     bt.addActionListener(this);
 }
   public void actionPerformed(ActionEvent e) {
       String name1 = tf1.getText();
       String age1 = tf2.getText();
       String add1 = tf3.getText();
       int age = Integer.parseInt(tf2.getText());

       String message = "Hi!, "+name1+".";
       String message2 = "Age: "+age1+".";
       String message3 = "Address: "+add1+".";
       String message4A = "You Can Vote.";
       String message4B = "You Can't Vote.";
       lb4.setText(message);
       lb5.setText(message2);
       lb6.setText(message3);
       if(age > 17){
           lb7.setText(message4A);
       }else{
           lb7.setText(message4B);
       }
    }
   public static void main(String []args){
        Samson_Swing fr = new Samson_Swing();
        fr.setVisible(true);
   }
}