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Stream.distinct() in Java
The distinct() method of the stream class returns a stream consisting of the distinct elements of this stream. The syntax is as following −
Stream<T> distinct()
Example
Following is an example to implement the distinct() method in the Stream class −
import java.util.*; public class Demo { public static void main(String[] args) { List<Integer> list = Arrays.asList(10, 30, 40, 40, 50, 70, 90, 90, 100); System.out.println("List = "+list); System.out.println("Displaying only the distinct elements = "); list.stream().distinct().forEach(System.out::println); } }
Output
List = [10, 30, 40, 40, 50, 70, 90, 90, 100] Displaying only the distinct elements = 10 30 40 50 70 90 100
Example
Let us see another example −
import java.util.*; public class Demo { public static void main(String[] args) { List<Integer> list = Arrays.asList(10, 30, 40, 40, 50, 70, 90, 90, 100); System.out.println("List = "+list); System.out.println("Count of distinct elements = "+(list.stream().distinct().count())); System.out.println("Displaying only the distinct elements = "); list.stream().distinct().forEach(System.out::println); } }
Output
List = [10, 30, 40, 40, 50, 70, 90, 90, 100] Count of distinct elements = 7 Displaying only the distinct elements = 10 30 40 50 70 90 100
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