该clear()
方法从AbstractList类继承。它允许您从列表中删除所有元素。
语法如下
public void clear()
要使用Java中的AbstractSequentialList类,您需要导入以下包
import java.util.AbstractSequentialList;
以下是clear()
在Java中实现AbstractSequentialList方法的示例
import java.util.LinkedList; import java.util.AbstractSequentialList; public class Demo { public static void main(String[] args) { AbstractSequentialList<Integer> absSequential = new LinkedList<>(); absSequential.add(250); absSequential.add(320); absSequential.add(400); absSequential.add(550); absSequential.add(600); absSequential.add(700); absSequential.add(900); System.out.println("Elements in the AbstractSequentialList = "+absSequential); System.out.println("Does the element exist? = " + absSequential.contains(400)); absSequential.clear(); System.out.println("Elements in the updated AbstractSequentialList = "+absSequential); } }
输出结果
Elements in the AbstractSequentialList = [250, 320, 400, 550, 600, 700, 900] Does the element exist? = true Elements in the updated AbstractSequentialList = []