DoubleStream boxed() in Java with Examples
DoubleStream boxed() returns a Stream consisting of the elements of this stream, each boxed to a Double.
Note : DoubleStream boxed() is a intermediate operation. These operations are always lazy. Intermediate operations are invoked on a Stream instance and after they finish their processing, they give a Stream instance as output.
Syntax :
Stream<Double> boxed()
Parameters :
- Stream : A sequence of elements supporting sequential and parallel aggregate operations.
- Double : The Double class wraps a value of the primitive type double in an object. An object of type Double contains a single field whose type is double.
Return Value : The function returns a Stream boxed to a Double.
Example 1 :
// Java code for DoubleStream boxed()import java.util.*;import java.util.stream.Stream;import java.util.stream.DoubleStream;  class GFG {      // Driver code    public static void main(String[] args)    {        // Creating an DoubleStream        DoubleStream stream = DoubleStream.of(3.2, 8.4, 3.6, 4.7);          // Creating a Stream of Doubles        // Using DoubleStream boxed() to return        // a Stream consisting of the elements        // of this stream, each boxed to a Double.        Stream<Double> stream1 = stream.boxed();          // Displaying the elements        stream1.forEach(System.out::println);    }} |
Output :
3.2 8.4 3.6 4.7
Example 2 :
// Java code for DoubleStream boxed()import java.util.*;import java.util.stream.Stream;import java.util.stream.DoubleStream;  class GFG {      // Driver code    public static void main(String[] args)    {        // Creating an DoubleStream        DoubleStream stream = DoubleStream.of(3.2, 8.4, 3.6, 4.7);          // Creating a Stream of Doubles        // Using DoubleStream boxed() to return        // a Stream consisting of the elements        // of this stream, each boxed to a Double.        Stream<Double> stream1 = stream.boxed();          Stream<Object> stream2 = Stream.concat(stream1,                                   Stream.of("Geeks", "for", "Geeks"));          // Displaying the elements        stream2.forEach(System.out::println);    }} |
Output :
3.2 8.4 3.6 4.7 Geeks for Geeks
