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LongStream generate() method in Java

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  • Last Updated : 06 Dec, 2018

LongStream generate(LongSupplier s) returns an infinite sequential unordered stream where each element is generated by the provided LongSupplier(a supplier of long-valued results). This is suitable for generating constant streams, streams of random elements, etc.

Syntax :

static LongStream generate(LongSupplier s)

Parameters :

  1. LongStream : a sequence of primitive long-valued elements.
  2. LongSupplier : a supplier of long-valued elements.
  3. s : LongSupplier for generated elements.

Return Value : a new infinite sequential unordered LongStream.

Example 1 :




// Java code for LongStream.generate()
// to generate an infinite sequential
// unordered LongStream
import java.util.*;
import java.util.stream.LongStream;
  
class GFG {
  
    // Driver code
    public static void main(String[] args)
    {
        // using LongStream.generate() method
        // to generate 7 random Integer values
        LongStream stream = LongStream.generate(()
               -> { return (long)(Math.random() * 10000); });
  
        // Displaying the randomly generated values
        stream.limit(7).forEach(System.out::println);
    }
}

Output :

4377
6200
9920
6015
7879
7887
8792
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