treeset java_Java TreeSet iterator（）方法与示例

冷不防 2023-03-05 15:53 9阅读 0赞

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][https_www.includehelp.com_java_treeset-iterator-method-with-example.aspx]

treeset java

[https_www.includehelp.com_java_treeset-iterator-method-with-example.aspx]: https://www.includehelp.com/java/treeset-iterator-method-with-example.aspx