Well, sign up simply means to register. It could be portal, newsletter or things the like. So when you visit and access anything for the first time, you need to sign up. Often, this is referred to as register. For instance, if you are new to Twitter, you need to sign up first.

To get help you can see the video.

Source code for signup page.

try{
String sql = "insert into login(username,password,email,gender) values(?,?,?,?)";
pst = con.prepareStatement(sql);
pst.setString(1, jTextField1.getText());
pst.setString(2, jPasswordField1.getText());
pst.setString(3, jTextField2.getText());
pst.setString(4, (String) jComboBox1.getSelectedItem());
pst.execute();
JOptionPane.showMessageDialog(null, "Inserted…!!!");
}catch(Exception e){
JOptionPane.showMessageDialog(null, e);
}

Interface of after run the signup page.