Program/ Example - create Int Stream and use Reduce Method on it in java 8
/**
* Write a program to - create Int Stream and use Reduce Method on it in java 8
*/
import java.util.OptionalInt;
import java.util.stream.IntStream;
public class IntStreamReduceMethodExample {
public static void main(String[] args) {
System.out.println("Create IntStream");
IntStream streamOfIntegers = IntStream.of(1, 2, 3, 4);
System.out.println("Use reduce() method - to calculate sum of Integers in IntStream");
//reduce() method will reduce stream to calculate sum of Integers in IntStream
OptionalInt optionalInteger = streamOfIntegers.reduce((i1, i2) -> i1 + i2);
//Display optionalInteger
System.out.println("sum = "+optionalInteger.getAsInt()); //get() returns the value.
}
}
/* OUTPUT
Create IntStream
Use reduce() method - to calculate sum of Integers in IntStream
sum = 10
*/
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