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Copy pathParallelismLesson.java
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78 lines (66 loc) · 2.02 KB
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package java8;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.stream.Stream;
public class ParallelismLesson {
public static void main(String[] args) {
Stream<String> stream = Stream.of("1","2").parallel();
List<String> list = new ArrayList<>();
list.parallelStream();
List<Integer> list2 = new ArrayList<>();
for (int i = 0; i < 10_000_000; i++) {
list2.add(i);
list2.add(10_000_000 - i);
}
System.out.println(new Date());
// list2.stream().parallel().filter(x -> x%2 == 0).map(x -> new Double(x)).forEach(x -> x.toString());
list2.stream().sorted().count();
System.out.println(new Date());
List<Integer> list3 = new ArrayList<>();
list3.add(6);
list3.add(4);
list3.add(2);
list3.add(3);
list3.add(2);
list3.add(5);
List<Stud> list4 = new ArrayList<>();//LinkedList
list4.add(new Stud("Max"));
list4.add(new Stud("Mike"));
System.out.println(new Date().getTime());
list4.stream().map(Stud::getName).count();
System.out.println(new Date().getTime());
int size = 10;
double[] values = new double[size];
for(int i = 0; i < values.length;i++) {
values[i] = i;
}
double[] values2 = new double[size];
Arrays.parallelSetAll(values2, i -> i);
List<Integer> studs = new ArrayList<>();
for (int i = 0; i < 10_000; i++) {
studs.add(i);
}
studs.stream().forEach(x -> System.out.println(x));
}
}
class Stud {
String name;
String surname;
public Stud(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname = surname;
}
}