OptionalInt stream() method in Java with examples

OptionalInt stream() method in Java with examples

Last Updated : 28 May, 2019

The stream() method help us to get value contain by OptionalInt as IntStream. If a value is present, method returns a sequential IntStream containing only that value, otherwise returns an empty IntStream. Syntax:

public IntStream stream()

Parameters: This method accepts nothing. Return value: This method returns the optional value as an IntStream. Below programs illustrate stream() method: Program 1:

Java

// Java program to demonstrate
// OptionalInt.stream() method

import java.util.OptionalInt;
import java.util.stream.IntStream;

public class GFG {

    public static void main(String[] args)
    {

        // create a OptionalInt
        OptionalInt opInt = OptionalInt.of(452146);

        // get value as stream
        IntStream out = opInt.stream();

        // print value
        System.out.println("Value:");
        out.forEach(System.out::println);
    }
}

Output:

Program 2:

Java

// Java program to demonstrate
// OptionalInt.stream() method

import java.util.OptionalInt;
import java.util.stream.IntStream;

public class GFG {

    public static void main(String[] args)
    {

        // create a OptionalInt
        OptionalInt opInt = OptionalInt.empty();

        // get value as stream
        IntStream out = opInt.stream();

        // print value
        if (out.count() == 0)
            System.out.println("opInt is empty");
    }
}

Output:

References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalInt.html#empty()

OptionalInt stream() method in Java with examples

A

AmanSingh2210

Improve

Article Tags :

Practice Tags :

Java

Similar Reads

Optional stream() method in Java with examples

The stream() method of java.util.Optional class in Java is used to get the sequential stream of the only value present in this Optional instance. If there is no value present in this Optional instance, then this method returns returns an empty Stream. Syntax: public Stream<T> stream() Paramete

OptionalLong stream() method in Java with examples

The stream() method help us to get Long value contain by OptionalLong as LongStream.If a value is present, method returns a sequential LongStream containing only that value, otherwise returns an empty LongStream. Syntax: public LongStream stream() Parameters: This method accepts nothing. Return valu

OptionalDouble stream() method in Java with examples

The stream() method help us to get double value contain by OptionalDouble as DoubleStream.If a value is present, method returns a sequential DoubleStream containing only that value, otherwise returns an empty DoubleStream. Syntax: public DoubleStream stream() Parameters: This method accepts nothing.

Stream min() method in Java with Examples

Stream.min() returns the minimum element of the stream based on the provided Comparator. A Comparator is a comparison function, which imposes a total ordering on some collection of objects. min() is a terminal operation which combines stream elements and returns a summary result. So, min() is a spec

PrintStream println() method in Java with Examples

The println() method of PrintStream Class in Java is used to break the line in the stream. This method do not accepts any parameter or return any value. Syntax: public void println() Parameters: This method do not accepts any parameter. Return : This method do not returns any value. Below methods il