Java abstractsequentialist | iterator()方法

原文:https://www . geesforgeks . org/Java-abstractsequentialist-iterator-method/

【抽象顺序列表】 迭代器()方法在 Java 中用于获取列表上的迭代器或列表迭代器。它返回列表中元素的迭代器(按正确的顺序)。此方法覆盖类抽象列表< E >中的迭代器()

语法:

public Iterator<E> iterator()

返回值:这个方法返回这个列表中元素的迭代器(按照正确的顺序)。

下面是演示迭代器()方法的代码:

程序 1:

// Java program to demonstrate
// iterator() method

import java.util.*;

public class GfG {

    public static void main(String[] args)
    {
        // Creating an instance of the AbstractSequentialList
        AbstractSequentialList<Integer> absl = new LinkedList<>();

        // adding elements to absl
        absl.add(5);
        absl.add(6);
        absl.add(7);
        absl.add(2, 8);
        absl.add(2, 7);
        absl.add(1, 9);
        absl.add(4, 10);

        // Getting Iterator
        Iterator<Integer> Itr = absl.iterator();

        // Traversing elements with help of iterator
        while (Itr.hasNext()) {
            System.out.print(Itr.next() + " ");
        }
    }
}

Output:

5 9 6 7 10 8 7

程序 2:

// Java program to demonstrate
// iterator() method

import java.util.*;

public class GfG {

    public static void main(String[] args)
    {
        // Creating an instance of the AbstractSequentialList
        AbstractSequentialList<String> absl = new LinkedList<>();

        // adding elements to absl
        absl.add("Geeks");
        absl.add("ForGeeks");
        absl.add("A");
        absl.add("Portal");
        absl.add(3, "Computer Science");
        absl.add(5, "For Geeks");

        // Getting Iterator
        Iterator<String> Itr = absl.iterator();

        // Traversing elements with help of iterator
        while (Itr.hasNext()) {
            System.out.println(Itr.next());
        }
    }
}

Output:

Geeks
ForGeeks
A
Computer Science
Portal
For Geeks

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