treeset java

TreeSet類Higher()方法 (TreeSet Class higher() method)

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

  Higher()方法在java.util包中可用。

• higher() method is used to return the lowest element in this TreeSet that is higher than the specified element (ele).

  Higher()方法用于返回此TreeSet中比指定元素(ele)高的最低元素。

• higher() 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.

  Higher()方法是一種非靜態(tài)方法，只能通過類對(duì)象訪問，如果嘗試使用類名稱訪問該方法，則會(huì)收到錯(cuò)誤消息。

• higher() method may throw an exception at the time of returning the element.

  Higher()方法在返回元素時(shí)可能會(huì)引發(fā)異常。

  • ClassCastException: This exception may throw when the given parameter is incompatible to compare.ClassCastException ：如果給定參數(shù)不兼容以進(jìn)行比較，則可能引發(fā)此異常。
  • NullPointerException: This exception may throw when the given element is null exists.NullPointerException ：當(dāng)給定元素為null時(shí)，可能引發(fā)此異常。

Syntax:

句法：

public Element higher(Element ele);

Parameter(s):

參數(shù)：

• Element ele – represents the element (ele) is to be checked with other element exists in this TreeSet.

  元素ele –表示要與該TreeSet中存在的其他元素檢查元素(ele)。

Return value:

返回值：

The return type of the method is Element, it returns least element higher than the given element (ele) in this TreeSet otherwise it returns null.

方法的返回類型為Element ，它返回比此TreeSet中給定元素(ele)高的最小元素，否則返回null。

Example:

例：

// Java program to demonstrate the example // of Element higher(Element ele) method of TreeSet import java.util.*;public class HigherOfTreeSet {public static void main(String[] args) {// Instantiates a TreeSet objectTreeSet < 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 TreeSetSystem.out.println("TreeSet: " + tree_set);// By using higher() method is to// return the least element higher than// the given element i.e. PHPObject least = tree_set.higher("Microservices");// Display leastSystem.out.println("tree_set.higher(Microservices): " + least);} }

Output

輸出量

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

翻譯自: https://www.includehelp.com/java/treeset-higher-method-with-example.aspx

treeset java

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