How do I put user input from a GUI into a class instance in java

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Java

GUI

So this is roughly what I want to do. But instead of add it to an ArrayList I want to add it to a class instance and then take the Array of the class instances and put it into another class

cp.add(addPetB);
      cp.add(doneOutputB);
       
      rect.setVisible(true);
       
      cbHandler = new AddPetButtonHandler();
      ebHandler = new DoneOutputButtonHandler();
 
      addPetB.addActionListener(cbHandler);
      doneOutputB.addActionListener(ebHandler);
    }
     
    //Instatiates driver method
    public static void main(String[] args)
    {
        PetInput ArE = new PetInput();
        ArE.driver();   //lines edited to meet JavaRanch restrictions on abbreviations
    }
     
     private class AddPetButtonHandler implements ActionListener
    {
       public void actionPerformed(ActionEvent e)
       {
         petName = String.parseString(nameTF.getText());
         petAge = Int.parseInt(ageTF.getText());
         petGender = //not sure how to store gender
          
         petInfo.add(petName);
         petInfo.add(petAge);
         petInfo.add(petGender);
         }

What I have tried:

I've tried putting the code into an ArrayList
Tried making a mechanism to create new class instantiations