How to check if “Radiobutton” is checked?

Question

I would like to make a structure with the condition (if-else) RadioButton

I want that when the Radiobutton RB1 is selected, this function is ac

Answer 1

        if(jRadioButton1.isSelected()){
            jTextField1.setText("Welcome");
        }
        else if(jRadioButton2.isSelected()){
            jTextField1.setText("Hello");
        }