Java 中的 blocking request removelastprocession()方法，带示例
原文:https://www . geeksforgeeks . org/blocking reque-removelastcoccurrence-method-in-Java-with-examples/
移除最后一次出现()方法阻塞请求从该命令中移除指定元素的最后一次出现。如果 deque 不包含该元素，它将保持不变。如果这个 deque 包含指定的元素，则返回 true，否则返回 false。
语法:
public boolean removeLastOccurrence(Object o)
参数:该方法接受一个强制参数 o ，该参数指定最后一次出现的元素将从出列容器中移除。
返回:该方法返回真如果元素存在并从德格容器中移除，否则返回假。
注意:blocking equation的removelastpocation()方法继承自 Java 中的 LinkedBlockingDeque 类。
下面的程序说明了阻止请求的 removeLastOccurrence()方法:
程序 1: 当元素存在时。
// Java Program to demonstrate removeLastOccurrence()
// method of BlockingDeque
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.BlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
// create object of BlockingDeque
BlockingDeque<Integer> BD
= new LinkedBlockingDeque<Integer>();
// Add numbers to end of BlockingDeque
BD.add(15);
BD.add(20);
BD.add(20);
BD.add(15);
// print Dequeue
System.out.println("Blocking Deque: " + BD);
if (BD.removeLastOccurrence(15))
System.out.println("Last occurrence of 15 removed");
else
System.out.println("15 not present and not removed");
// prints the Deque after removal
System.out.println("Blocking Deque: " + BD);
}
}
输出:
Blocking Deque: [15, 20, 20, 15]
Last occurrence of 15 removed
Blocking Deque: [15, 20, 20]
程序 2: 当元素不存在时。
// Java Program to demonstrate removeLastOccurrence()
// method of BlockingDeque
import java.util.concurrent.BlockingDeque;
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
// create object of BlockingDeque
BlockingDeque<Integer> BD
= new LinkedBlockingDeque<Integer>();
// Add numbers to end of BlockingDeque
BD.add(15);
BD.add(20);
BD.add(20);
BD.add(15);
// print Deque
System.out.println("Blocking Deque: " + BD);
if (BD.removeLastOccurrence(10))
System.out.println("Last occurrence of 10 removed");
else
System.out.println("10 not present and not removed");
// prints the Deque after removal
System.out.println("Blocking Deque: " + BD);
}
}
输出:
Blocking Deque: [15, 20, 20, 15]
10 not present and not removed
Blocking Deque: [15, 20, 20, 15]
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