PriorityBlockingQueue的remove(Object o)方法用于从此队列中删除元素。如果存在,此方法将删除作为参数传递的元素的单个实例。
当且仅当元素被删除时,它才返回true;否则,它返回false。
用法:
public boolean remove(Object o)
参数:此方法接受必需参数o,该参数是要从此队列中删除的元素(如果存在)。
返回值:如果指定的元素已成功删除,则此方法返回true。否则,此方法返回false。
下面的程序说明PriorityBlockingQueue中的remove()方法:
示例1:
// Java Program Demonstrate remove()
// method of PriorityBlockingQueue
import java.util.concurrent.PriorityBlockingQueue;
public class GFG {
public static void main(String[] args)
{
// create object of PriorityBlockingQueue
PriorityBlockingQueue<Integer> pbq
= new PriorityBlockingQueue<Integer>();
// Add element to PriorityBlockingQueue
pbq.put(1);
pbq.put(2);
pbq.put(3);
pbq.put(4);
// print queue
System.out.println("Queue: " + pbq);
// remove 2
boolean res = pbq.remove(2);
System.out.println("\n2 removed: " + res);
// print queue
System.out.println("Queue: " + pbq);
// remove 5
res = pbq.remove(5);
System.out.println("\n5 removed: " + res);
// print queue
System.out.println("Queue: " + pbq);
}
}
输出:
Queue: [1, 2, 3, 4] 2 removed: true Queue: [1, 4, 3] 5 removed: false Queue: [1, 4, 3]
// Java Program Demonstrate remove()
// method of PriorityBlockingQueue
import java.util.concurrent.PriorityBlockingQueue;
public class GFG {
public static void main(String[] args)
{
// create object of PriorityBlockingQueue
PriorityBlockingQueue<String> pbq
= new PriorityBlockingQueue<String>();
// Add element to PriorityBlockingQueue
pbq.put("Geeks");
pbq.put("forGeeks");
pbq.put("A Computer");
pbq.put("Portal");
// print queue
System.out.println("Queue: " + pbq);
// remove Geeks
boolean res = pbq.remove("Geeks");
System.out.println("\nGeeks removed: " + res);
// print queue
System.out.println("Queue: " + pbq);
// remove SandeepJain
res = pbq.remove("SandeepJain");
System.out.println("\nSandeepJain removed: " + res);
// print queue
System.out.println("Queue: " + pbq);
}
}
输出:
Queue: [A Computer, Portal, Geeks, forGeeks] Geeks removed: true Queue: [A Computer, Portal, forGeeks] SandeepJain removed: false Queue: [A Computer, Portal, forGeeks]
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注:本文由纯净天空筛选整理自Code_r大神的英文原创作品 PriorityBlockingQueue remove() 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。