Skip to content
Related Articles

Related Articles

DoubleStream filter() in Java with examples
  • Last Updated : 06 Dec, 2018

DoubleStream filter(DoublePredicate predicate) returns a stream consisting of the elements of this stream that match the given predicate. This is an intermediate operation. These operations are always lazy i.e, executing an intermediate operation such as filter() does not actually perform any filtering, but instead creates a new stream that, when traversed, contains the elements of the initial stream that match the given predicate.

Syntax :

DoubleStream filter(DoublePredicate predicate)

Parameters :

  1. DoubleStream : A sequence of primitive double-valued elements.
  2. DoublePredicate : A predicate (boolean-valued function) of one double-valued argument.

Return Value : The function returns the new stream.

Example 1 : filter() method on DoubleStream.






// Java code for DoubleStream filter
// (DoublePredicate predicate) to get a stream
// consisting of the elements of this
// stream that match the given predicate.
import java.util.*;
import java.util.stream.DoubleStream;
  
class GFG {
  
    // Driver code
    public static void main(String[] args)
    {
        // Creating an DoubleStream
        DoubleStream stream = DoubleStream.of(3.6, 5.4, 6.6, 8.1, 9.7);
  
        // Using DoubleStream filter(DoublePredicate predicate)
        // to get a stream consisting of the
        // elements that are greater than 5.7
        stream.filter(num -> num > 5.7)
            .forEach(System.out::println);
    }
}
Output:
6.6
8.1
9.7

Example 2 : filter() method on DoubleStream.




// Java code for DoubleStream filter
// (DoublePredicate predicate) to get a stream
// consisting of the elements of this
// stream that match the given predicate.
import java.util.*;
import java.util.stream.DoubleStream;
  
class GFG {
  
    // Driver code
    public static void main(String[] args)
    {
        // Creating an DoubleStream
        DoubleStream stream = DoubleStream.of(3.6, 5.4, 6.6, 8.1, 9.7);
  
        // Using DoubleStream filter(DoublePredicate 
        // predicate) to get a stream consisting of 
        // the elements that when divided by 2
        // gives quotient > 2.3
        stream.filter(num -> num / 2.0 > 2.3)
            .forEach(System.out::println);
    }
}
Output:
5.4
6.6
8.1
9.7

Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

My Personal Notes arrow_drop_up
Recommended Articles
Page :