Java中ArrayList和CopyOnWriteArrayList之间的区别
以下是Java中ArrayList和CopyOnWriteArrayList类之间的显着区别。
示例
import java.util.Iterator;
import java.util.concurrent.CopyOnWriteArrayList;
public class Tester {
public static void main(String args[]) {
//创建一个数组列表
CopyOnWriteArrayList<String> al = new CopyOnWriteArrayList();
System.out.println("Initial size of al: " + al.size());
//将元素添加到数组列表
al.add("C");
al.add("A");
al.add("E");
al.add("B");
al.add("D");
al.add("F");
al.add(1, "A2");
System.out.println("Size of al after additions: " + al.size());
//显示数组列表
System.out.println("Contents of al: " + al);
//从数组列表中删除元素
al.remove("F");
al.remove(2);
System.out.println("Size of al after deletions: " + al.size());
System.out.println("Contents of al: " + al);
try{
Iterator<String> iterator = al.iterator();
while(iterator.hasNext()) {
iterator.remove();
}
}catch(UnsupportedOperationException e) {
System.out.println("不支持的方法：");
}
System.out.println("Size of al: " + al.size());
}
}这将产生以下结果-
输出结果
Initial size of al: 0 Size of al after additions: 7 Contents of al: [C, A2, A, E, B, D, F] Size of al after deletions: 5 Contents of al: [C, A2, E, B, D] 不支持的方法： Size of al: 5
热门推荐
10 对患者生日祝福语简短
11 结婚祝福语简短装备
12 周岁祝福语学生文案简短
13 订婚领证祝福语简短精辟
14 导师获奖祝福语大全简短
15 新婚购房祝福语简短精辟
16 牛年祝福语简短的爱人
17 送芒果的祝福语简短
18 送给学长毕业祝福语简短