Java 中迭代器和拆分器的区别
Java 迭代器接口表示一个能够遍历一组 Java 对象的对象，一次一个对象。迭代器接口是 Java 中最古老的对象集合迭代机制之一(虽然不是最古老的——枚举器早于迭代器)。
此外，迭代器在两个方面不同于枚举:
1。迭代器允许调用方在元素迭代期间从指定集合中移除给定元素。
2。方法名称得到增强。
爪哇
// Java program to illustrate Iterator interface
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
public class JavaIteratorExample1 {
public static void main(String[] args)
{
// create a linkedlist
List<String> list = new LinkedList<>();
// Add elements
list.add("Welcome");
list.add("to");
list.add("our");
list.add("website");
// print the list to the console
System.out.println("The list is given as : "
+ list);
// call iterator on the list
Iterator<String> itr = list.iterator();
// itr.hasNext() returns true if there
// is still an element next to the current
// element pointed by iterator
while (itr.hasNext()) {
// Returns the next element.
System.out.println(itr.next());
}
// Removes the last element.
itr.remove();
// print the list after removing an
// element
System.out.println(
"After the remove() method is called : "
+ list);
}
}
输出
The list is given as : [Welcome, to, our, website]
Welcome
to
our
website
After the remove() method is called : [Welcome, to, our]
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