How to initialize anonymous inner class in Java

Question

Is there any way to initialize anonymous inner class in Java?

For example:

new AbstractAction() {
    actionPerformed(ActionEvent event) {
    ...
          


        

Answer 1

It's not quite clear what you mean, but you can use an initializer block to execute code at construction time:

new AbstractAction() {

    {
        // This code is called on construction
    }

    @Override public void actionPerformed(ActionEvent event) {
    ...
    }
}