Can I put an if statement inside a lambda expression in Java?

Question

More specifically, I'm talking about for Java Swing where you would use a lambda expression for adding an ActionListener.

combobox.addActionListener(
    event -> {if (boolean) runMethod()});

I've tried compiling as written, but it didn't work so I'm wondering if such a flow of logic is just not allowed or if I just need to reword a few things.

Answer 1

combobox.addActionListener(
    event -> {if (boolean) runMethod();});

Missing a semicolon.