oop 10

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.regex.Pattern;
import javax.swing.*;
public class Employee {

    public Employee() {

    JFrame jfrm = new JFrame("Employee Details ");
    jfrm.setLayout(new BorderLayout());
    jfrm.setSize(275, 100);
    jfrm.setMinimumSize(new Dimension(475, 300));
     jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   jfrm.setVisible(true);

   JPanel jp1 = new JPanel(new GridLayout(5,2,20,20));
   jfrm.add(jp1);

   JLabel jl1=new JLabel(" Employee Id : ");
   JLabel jl2=new JLabel(" Name : ");
   JLabel jl3=new JLabel(" Username : ");
   JLabel jl4=new JLabel(" Password : ");
   JLabel jl5=new JLabel(" Mobile Number : ");

   JTextField t1 = new JTextField(10);
   JTextField t2 = new JTextField(10);
   JTextField t3 = new JTextField(10);
   JPasswordField t4 = new JPasswordField(10);
   JTextField t5 = new JTextField(10);

   jp1.add(jl1);
   jp1.add(t1);
   jp1.add(jl2);
   jp1.add(t2);
   jp1.add(jl3);
   jp1.add(t3);
   jp1.add(jl4);
   jp1.add(t4);
   jp1.add(jl5);
   jp1.add(t5);

   JPanel jp2= new JPanel(new FlowLayout(FlowLayout.CENTER));
   jfrm.add(jp2,BorderLayout.PAGE_END);


   JButton j1= new JButton("Sign Up");
   jp2.add(j1);
   j1.addActionListener( new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                String s=t2.getText();
                if(s.isEmpty())
                {
                     JOptionPane.showMessageDialog(jp1,"Incorrect Name");
                }
                String str=t3.getText();
                Pattern str_regex=Pattern.compile("[A-Za-z0-9_*.]+@[a-z]+.[a-z]");
                if(str_regex.matcher(str).find()==false)
                {
                    JOptionPane.showMessageDialog(jp1,"Incorrect Username");
                }

                String str1=t4.getText();
                Pattern str1_regex=Pattern.compile("[A-Z]++[a-z]++[0-9]++[_*.]+");
                if(str1_regex.matcher(str1).find()==false)
                {
                    JOptionPane.showMessageDialog(jp1,"Incorrect Password");
                }

                String str2=t5.getText();
                Pattern str2_regex=Pattern.compile("[3-90-9]+");
                if(str2_regex.matcher(str2).find()==false)
                {
                    JOptionPane.showMessageDialog(jp1,"Incorrect Mobile Number");
                }
                else if(str2.length()!=10)
                {
                    JOptionPane.showMessageDialog(jp1,"Incorrect Mobile Number");
                }
                throw new UnsupportedOperationException("Not supported yet.");
            }
            });


    }
}

class Demo {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable()
{
        public void run() {
            new Employee();
        }
});
    }
}