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package ch02;

public class LambdaExpressionExample {

@FunctionalInterface

interface MathInterface {

double getPiValue();

}

public static void main(String[] args) {

MathInterface math1 = new MathInterface() {

@Override

public double getPiValue() {

return 3.141592;

}

};

System.out.println("Pi: " + math1.getPiValue());

// ---

MathInterface math2 = () -> 3.141592;

System.out.println("Pi: " + math2.getPiValue());

}

}