Answers for "java interface lambda"

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java 8 function supplier consumer

@Testpublic void supplierWithOptional(){    
  Supplier<Double> doubleSupplier = () -> Math.random();   
  Optional<Double> optionalDouble = Optional.empty();    
  System.out.println(optionalDouble.orElseGet(doubleSupplier));}

Posted by: Guest on May-07-2020

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