Login Through Enter Button in java swing.


  if(evt.getKeyCode()==KeyEvent.VK_ENTER)
      {
            type=jComboBox1.getSelectedItem().toString();
if(type=="ADMIN")
{
        try
       {
           String cn=jTextField1.getText();
           String pass=jPasswordField1.getText();
           String type1=jComboBox1.getSelectedItem().toString();
           if(cn.equals(""))
           {
               JOptionPane.showMessageDialog(null,"Pls Enter ur Name and Password");
           }
           else if(pass.equals(""))
           {
               JOptionPane.showMessageDialog(null,"Pls Enter ur Name and Password");
           }
        
           else
           {
           Class.forName("com.mysql.jdbc.Driver");
           java.sql.Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3305/supplimentry","root","root");
           java.sql.PreparedStatement pst=con.prepareStatement("select name,password from register where name=? and password=? and type='1'");
           pst.setString(1,cn);
           pst.setString(2,pass);
           ResultSet rs=pst.executeQuery();
            if(rs.next())
             {
             close();
             Suppliment c=new Suppliment(type);
             c.setVisible(true);
             con.close();
             pst.close();
             }
            else
            {
            JOptionPane.showMessageDialog(null,"Error!!!");
             }
           }
        
       }
       catch(Exception e)
       {
           System.out.println(e);
       }
 jTextField1.setText("");
 jPasswordField1.setText("");
}
else if(type=="USER")
{
    try
       {
           String cn=jTextField1.getText();
           String pass=jPasswordField1.getText();
           String type1=jComboBox1.getSelectedItem().toString();
           if(cn.equals(""))
           {
               JOptionPane.showMessageDialog(null,"Pls Enter ur Name and Password");
           }
           else if(pass.equals(""))
           {
               JOptionPane.showMessageDialog(null,"Pls Enter ur Name and Password");
           }
        
           else
           {
           Class.forName("com.mysql.jdbc.Driver");
           java.sql.Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3305/supplimentry","root","root");
           java.sql.PreparedStatement pst=con.prepareStatement("select name,password from register where name=? and password=? and type='0'");
           pst.setString(1,cn);
           pst.setString(2,pass);
           ResultSet rs=pst.executeQuery();
            if(rs.next())
             {
             close();
             Suppliment c=new Suppliment(type);
             c.setVisible(true);
             con.close();
             pst.close();
             }
            else
            {
            JOptionPane.showMessageDialog(null,"Error!!!");
             }
           }
        
       }
       catch(Exception e)
       {
           System.out.println(e);
       }
 jTextField1.setText("");
 jPasswordField1.setText("");
}
      }

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