LinkedBlockingDeque的size()方法返回Deque容器的当前大小。在调用该函数时,将返回Deque容器中的元素数量。如果容器受容量限制,则它还会返回函数调用时容器中存在的元素数。
用法:
public int size()
返回值:此方法返回一个整数值,该值表示容器中的元素数。
以下示例程序旨在说明LinkedBlockingDeque的size()方法:
示例1:
// Java Program to demonstrate public int size()
// method of LinkedBlockingDeque
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
// create object of LinkedBlockingDeque
LinkedBlockingDeque<Integer> LBD
= new LinkedBlockingDeque<Integer>();
// Add numbers to end of LinkedBlockingDeque
LBD.add(15);
LBD.add(20);
LBD.add(20);
LBD.add(15);
LBD.add(15);
LBD.add(20);
LBD.add(20);
LBD.add(15);
// print Dequeue
System.out.println("Linked Blocking Deque: " + LBD);
// prints the Deque after removal
System.out.println("Size of Linked Blocking Deque: "
+ LBD.size());
}
}
输出:
Linked Blocking Deque: [15, 20, 20, 15, 15, 20, 20, 15] Size of Linked Blocking Deque: 8
示例2:
// Java Program to demonstrate public int size()
// method of LinkedBlockingDeque
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
// create object of LinkedBlockingDeque
LinkedBlockingDeque<String> LBD
= new LinkedBlockingDeque<String>();
// Add numbers to end of LinkedBlockingDeque
LBD.add("geeks");
LBD.add("forGeeks");
LBD.add("A Computer");
LBD.add("Portal");
// print Dequeue
System.out.println("Linked Blocking Deque: " + LBD);
// prints the Deque after removal
System.out.println("Size of Linked Blocking Deque: "
+ LBD.size());
}
}
输出:
Linked Blocking Deque: [geeks, forGeeks, A Computer, Portal] Size of Linked Blocking Deque: 4
参考: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#size–
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注:本文由纯净天空筛选整理自gopaldave大神的英文原创作品 LinkedBlockingDeque size() method in Java。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。