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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.math.BigDecimal;
  4. import java.util.function.BinaryOperator;
  5. import java.util.function.Function;
  6. import java.util.function.UnaryOperator;
  7. import java.util.stream.Stream;
  8.  
  9. class Ideone
  10. {
  11. 	Function<String, BigDecimal> NewPrice = BigDecimal::new;
  12. 	UnaryOperator<BigDecimal> DoublePrice = price -> price.multiply(BigDecimal.valueOf(2L));
  13. 	BinaryOperator<BigDecimal> WholesalePrice = (price, advantage) -> price.add(advantage);
  14. 	UnaryOperator<BigDecimal> WholesalePrice80 = price -> WholesalePrice.apply(price, BigDecimal.valueOf(80L));
  15. 	UnaryOperator<BigDecimal> WholesalePrice200 = price -> WholesalePrice.apply(price, BigDecimal.valueOf(200L));
  16.  
  17. 	void doCalc() {
  18. 		Function<String, BigDecimal> CalcPrice = NewPrice
  19. 				.andThen(DoublePrice)
  20. 				.andThen(WholesalePrice80)
  21. 				.andThen(DoublePrice)
  22. 				.andThen(WholesalePrice200);
  23.  
  24. 		Stream.of("120", "100").map(CalcPrice).forEach(System.out::println);
  25. 	}
  26.  
  27. 	public static void main (String[] args) throws java.lang.Exception
  28. 	{
  29. 		new Ideone().doCalc();
  30. 	}
  31. }
Success #stdin #stdout 0.23s 320832KB
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https://ideone.com/6MAwKM
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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