How can you replace creating an anonymous class with using a lambda expression?

In Android (Java 8+), anonymous classes implementing functional interfaces (interfaces with a single method) can be replaced with lambda expressions to simplify and improve code readability.

For example, instead of such an anonymous class:

button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        // action on click
    }
});

You can write a lambda:

button.setOnClickListener(v -> {
    // action on click
});

A lambda expression reduces syntax by eliminating the need to explicitly write the interface name and method, if the interface is functional. This makes the code shorter and clearer.