Java中的CopyOnWriteArrayList方法的hashCode()方法
若要获取列表的哈希码值，您需要使用hashCode()CopyOnWriteArrayList类的方法。
语法如下
public int hashCode()
要使用CopyOnWriteArrayList类，您需要导入以下包
import java.util.concurrent.CopyOnWriteArrayList;
以下是hashCode()在Java中实现CopyOnWriteArrayList类方法的示例
示例
import java.util.concurrent.CopyOnWriteArrayList;
public class Demo {
public static void main(String[] args) {
CopyOnWriteArrayList<Integer> arrList = new CopyOnWriteArrayList<Integer>();
arrList.add(30);
arrList.add(40);
arrList.add(60);
arrList.add(70);
arrList.add(90);
arrList.add(100);
arrList.add(120);
System.out.println("CopyOnWriteArrayList = " + arrList);
System.out.println("HashCode of the CopyOnWriteArrayList class = " + arrList.hashCode());
}
}输出结果
CopyOnWriteArrayList = [30, 40, 60, 70, 90, 100, 120] HashCode of the CopyOnWriteArrayList class = -494097927