LongStream generate() method in Java

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 :

LongStream : a sequence of primitive long-valued elements.
LongSupplier : a supplier of long-valued elements.
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); 
    } 
} 