pi

@FunctionalInterface
interface PiProvider {
    double getPi();
}

public class PiLambda {
    public static void main(String[] args) {
        // Lambda expression to return the value of Pi
        PiProvider piProvider = () -> Math.PI;
        
        // Invoke the lambda expression and print the value of Pi
        double piValue = piProvider.getPi();
        System.out.println("The value of Pi is: " + piValue);
    }
}