Java AbstractCollection类的iterator()方法
iterator()Java中AbstractCollection类的方法用于返回对该集合中包含的元素进行迭代的迭代器。
语法如下-
public abstract Iterator<E> iterator()
要使用Java中的AbstractCollection类，请导入以下包-
import java.util.AbstractCollection;
对于Iterator，请导入以下包-
import java.util.Iterator;
以下是iterator()在Java中实现AbstractCollection方法的示例-
示例
import java.util.Iterator;
import java.util.ArrayList;
import java.util.AbstractCollection;
public class Demo {
public static void main(String[] args) {
AbstractCollection<Object> absCollection = new ArrayList<Object>();
absCollection.add("Laptop");
absCollection.add("Tablet");
absCollection.add("Mobile");
absCollection.add("E-Book Reader");
absCollection.add("SSD");
absCollection.add("HDD");
System.out.println("AbstractCollection = " + absCollection);
System.out.println("Iterating elements one by one...");
Iterator i = absCollection.iterator();
while (i.hasNext()) {
System.out.println(i.next());
}
}
}输出结果
AbstractCollection = [Laptop, Tablet, Mobile, E-Book Reader, SSD, HDD] Iterating elements one by one... Laptop Tablet Mobile E-Book Reader SSD HDD