Java 中的 concurrentlinkedequeclear()方法
原文:https://www . geeksforgeeks . org/concurrentlinkedeque-clear-method-in-Java/
T1。clear()方法是 Java 中的一个内置方法，它移除了 Deque 中的元素。
语法:
public void clear()
参数:该方法不接受任何参数。
返回值:函数不返回任何内容
下面的程序举例说明了concurrentlinkedrequest . clear()方法:
程序 1 :
// Java Program to Demonstrate clear()
// method of ConcurrentLinkedDeque
import java.util.concurrent.*;
class GFG {
public static void main(String[] args)
{
// Creating an empty Deque
ConcurrentLinkedDeque<String> cld
= new ConcurrentLinkedDeque<String>();
// Add elements into the Deque
cld.add("Welcome");
cld.add("To");
cld.add("Geeks");
cld.add("4");
cld.add("Geeks");
// Displaying the Deque
System.out.println("ConcurrentLinkedDeque: "
+ cld);
// Remove all elements of the Deque using clear()
cld.clear();
// Displaying message
System.out.println("\nConcurrentLinkedDeque cleared\n");
// Displaying the Deque
System.out.println("ConcurrentLinkedDeque: "
+ cld);
}
}
输出:
ConcurrentLinkedDeque: [Welcome, To, Geeks, 4, Geeks]
ConcurrentLinkedDeque cleared
ConcurrentLinkedDeque: []
程序二:
// Java Program to Demonstrate clear()
// method of ConcurrentLinkedDeque
import java.util.concurrent.*;
class GFG {
public static void main(String[] args)
{
// Creating an empty Deque
ConcurrentLinkedDeque<Integer> cld
= new ConcurrentLinkedDeque<Integer>();
// Add elements into the Deque
cld.add(10);
cld.add(20);
cld.add(30);
cld.add(40);
cld.add(50);
// Displaying the Deque
System.out.println("ConcurrentLinkedDeque: "
+ cld);
// Remove all elements of the Deque using clear()
cld.clear();
// Displaying message
System.out.println("\nConcurrentLinkedDeque cleared\n");
// Displaying the Deque
System.out.println("ConcurrentLinkedDeque: "
+ cld);
}
}
输出:
ConcurrentLinkedDeque: [10, 20, 30, 40, 50]
ConcurrentLinkedDeque cleared
ConcurrentLinkedDeque: []
参考:https://docs . Oracle . com/javase/9/docs/API/Java/util/concurrentlinkedeque . html # clear–
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