Java中的 LinkedList spliterator() 方法
LinkedList的spliterator()方法返回一个Spliterator ,它具有与 LinkedList 相同的元素,是后期绑定和快速失败的。后期绑定 Spliterator 绑定到元素源意味着 LinkedList 在第一次遍历、第一次拆分或第一次查询估计大小时,而不是在创建 Spliterator 时。它可以与Java 8 中的 Streams 一起使用。它也可以单独和批量遍历元素。 Spliterator 是遍历元素的更好方法,因为它提供了对元素的更多控制。
句法:
public Spliterator spliterator()
返回:此方法在 LinkedList 中的元素上返回一个Spliterator 。
下面的程序说明了 LinkedList 的 spliterator() 方法:
示例 1:演示包含对象列表的 LinkedList 上的 spliterator() 方法。
// Java Program Demonstrate spliterator()
// method of LinkedList
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create an LinkedList which going to
// contains a list of numbers
LinkedList shapes = new LinkedList();
// Add different shape to linkedlist
shapes.add(new Shape("Circle", 234));
shapes.add(new Shape("Square", 225));
shapes.add(new Shape("Cone", 543));
shapes.add(new Shape("Rectangle", 342));
// create Spliterator of LinkedList
// using spliterator() method
Spliterator spliter = shapes.spliterator();
// print result from Spliterator
System.out.println("list of Shapes:");
// forEachRemaining method of Spliterator
spliter.forEachRemaining((Value) -> printDetails(Value));
}
// print details
public static void printDetails(Shape s)
{
System.out.println("************************");
System.out.println("Shape Name : " + s.shapename);
System.out.println("Shape Area : " + s.area);
}
}
// create a shape class
class Shape {
// shape class has two attributes
String shapename;
int area;
public Shape(String shapename, int area)
{
super();
this.shapename = shapename;
this.area = area;
}
}
输出:
list of Shapes:
************************
Shape Name : Circle
Shape Area : 234
************************
Shape Name : Square
Shape Area : 225
************************
Shape Name : Cone
Shape Area : 543
************************
Shape Name : Rectangle
Shape Area : 342
示例 2:演示包含电影名称列表的 LinkedList 上的 spliterator() 方法。
// Java Program Demonstrate spliterator()
// method of LinkedList
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create an LinkedList which going to
// contains a list of Movie names which is actually
// string values
LinkedList NameOfMovies = new LinkedList();
// Add Strings to list
// each string represents city name
NameOfMovies.add("Delhi 6");
NameOfMovies.add("3 Idiots");
NameOfMovies.add("Stree");
NameOfMovies.add("Airlift");
// using spliterator() method
Spliterator names = NameOfMovies.spliterator();
// print result from Spliterator
System.out.println("list of Movies:");
// forEachRemaining method of Spliterator
names.forEachRemaining((n) -> System.out.println("Movie Name: " + n));
}
}
输出:
list of Movies:
Movie Name: Delhi 6
Movie Name: 3 Idiots
Movie Name: Stree
Movie Name: Airlift
参考: https: Java/util/LinkedList.html#spliterator–