Get the value from a JTextField & re-write it into an existing variable

Question

Get the value from a JTextField & re-write it into an existing variable.

example:

public class variables{

     String var = "hi";

  public static void main(String[]args){

  //do sth    

  }

}

then interface reads the value from the main class & change the value from a JTextField

private void changeVariableActionPerformed(java.awt.event.ActionEvent evt) {                                               


  variables.var = txtField.getText();

  //then into textfield we write bye  & variables.var takes the value of bye

  //variables.var = "bye"

}  

I want to change the Value of var with the action perform

Answer 1

Add ActionLister to the JTextField and each time you change the value assign it to you variable.

you could do something like this:

txtField.addActionListener(new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
        variables.var = txtField.getText();

     }
 });