treeset java

TreeSet类的iterator()方法 (TreeSet Class iterator() method)

• iterator() method is available in java.util package.

  iterator()方法在java.util包中可用。

• iterator() method is used to iterate the elements of this TreeSet is ascending or increasing order.

  iterator()方法用于迭代此TreeSet的元素是升序还是升序。

• iterator() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  iterator()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• iterator() method does not throw an exception at the time of iterating elements by using iterator().

  通过使用iterator()迭代元素时， iterator()方法不会引发异常。

Syntax:

句法：

    public Iterator iterator();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of the method is Iterator, it returns TreeSet element in ascending order.

该方法的返回类型为Iterator ，它以升序返回TreeSet元素。

Example:

例：

// Java program to demonstrate the example 
// of Iterator iterator() method of TreeSet 
import java.util.*;
public class IteratorOfTreeSet {
public static void main(String[] args) {
// Instantiates a TreeSet object
TreeSet < String > tree_set = new TreeSet < String > ();
// By using add() method is to add
// the given object of this TreeSet 
tree_set.add("C");
tree_set.add("C++");
tree_set.add("JAVA");
tree_set.add("PHP");
tree_set.add("SFDC");
// Display TreeSet
System.out.println("TreeSet: " + tree_set);
// By using iterator() method is to
// iterate the TreeSet elements in an
// increasing order
System.out.println("tree_set.iterator(): ");
for (Iterator itr = tree_set.iterator(); itr.hasNext();)
System.out.println(itr.next());
}
}

Output

输出量

TreeSet: [C, C++, JAVA, PHP, SFDC]
tree_set.iterator(): 
C
C++
JAVA
PHP
SFDC

翻译自: https://www.includehelp.com/java/treeset-iterator-method-with-example.aspx

treeset java