how to get String in jFrame and pass to another jFrame?

Question

I have two jFrame (LoginForm, MainForm), LoginForm have a TextField (tfusername),
how can get tfusername.gettext() in MainForm?

Answer 1

https://stackoverflow.com/questions/17412498/pass-values-entered-in-one-jframes-text-field-as-an-input-parameter-in-other-jf

Answer 2

What returns null? And can you post the whole code?

Answer 3

Whoops, guess I misunderstood what you were asking. You can pass the text variable via an instance method of the Jframe you are passing it to.

Answer 4

a simple way:
in loginform>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
public class LoginForm extends javax.swing.JFrame{
public static String Username;
public static String Password;
//create a method
public void InsertData(){
Username = tfusername.gettext();
Password = tfpassword.gettext();
}
in MainForm>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
String user = UserName;
String Pass = Password;

Answer 5

You can just use the getText() method of the JTextField class.
String text = tfusername.getText();

https://docs.oracle.com/javase/7/docs/api/javax/swing/JTextField.html
Note that it is inherited from JTextComponent
https://docs.oracle.com/javase/7/docs/api/javax/swing/text/JTextComponent.html

Answer 6

return null