Question

like this, A a = new A(), how can I get a’s name?(Get a String “a” from a) ?

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There is a JPanel contains some JTextFields, a map contains all the JTextFields’ names(the variables’ names). I want to set the map’s values to the JTextFields’ texts.

public void mapToJPanel(Map map, JPanel panel) {
    Component[] compArr = panel.getComponents();
    for (Component comp : compArr) {
        if (comp.getClass().getSimpleName().equals("JTextField")) {
            JTextField textField = (JTextField) comp;
            textField.setText(map.get(textField.getName()).toString());//getName() method
        }
    }
}

Accross getName() method, I get null -_- I know the getName() method is not used to get the variable name.
I’m using netbeans doing Java swing visual development , so I can not rewrite the components(like JTextField).

Answer 1

You can use Component.setName() to give names to Swing and AWT components.