We would like to know how to compare the thread name for filter and map and foreach method.
import java.util.Arrays; import java.util.List; /*from www. j a v a 2 s . c o m*/ public class Main { public static void main(String[] args) throws Exception { List<String> strings = Arrays.asList("a1", "a2", "b1", "c2", "c1"); strings .parallelStream() .filter(s -> { System.out.format("filter: %s [%s]\n", s, Thread.currentThread().getName()); return true; }) .map(s -> { System.out.format("map: %s [%s]\n", s, Thread.currentThread().getName()); return s.toUpperCase(); }) .forEach(s -> System.out.format("forEach: %s [%s]\n", s, Thread.currentThread().getName())); } }
The code above generates the following result.