ArrayList類removeRange()方法 (ArrayList Class removeRange() method)

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

  removeRange()方法在java.util包中可用。

• removeRange() method is used to remove the elements whose range is between st_in(start index) and en_in(end index) of this Arraylist. Here, st_in(inclusive) & en_in(exclusive).

  removeRange()方法用于刪除范圍在此Arraylist的st_in(開(kāi)始索引)和en_in(結(jié)束索引)之間的元素。 在這里， st_in(含)和en_in(不含) 。

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

  removeRange()方法是一種非靜態(tài)方法，因此可以通過(guò)類對(duì)象進(jìn)行訪問(wèn)，如果嘗試使用類名稱訪問(wèn)該方法，則會(huì)收到錯(cuò)誤消息。

• removeRange() method may throw an exception at the time of removing elements within the given range.

  removeRange()方法在刪除給定范圍內(nèi)的元素時(shí)可能會(huì)引發(fā)異常。

  IndexOutOfBoundsException: This exception may throw when the given range does not exist.

  IndexOutOfBoundsException ：如果給定范圍不存在，則可能引發(fā)此異常。

Syntax:

句法：

public void removeRange(int st_in, int end_in);

Parameter(s):

參數(shù)：

• int st_in – represent the index of starting element to remove.

  int st_in –表示要?jiǎng)h除的起始元素的索引。

• int en_in – represents the index of ending element to remove.

  int en_in –表示要?jiǎng)h除的結(jié)束元素的索引。

Return value:

返回值：

The return type of this method is void, it returns nothing.

此方法的返回類型為void ，不返回任何內(nèi)容。

Example:

例：

// Java program to demonstrate the example // of void removeRange() method of ArrayListimport java.util.*;public class RemoveRangeOfArrayList extends ArrayList {public static void main(String[] args) {// Create an ArrayList with initial // capacity of storing elementsRemoveRangeOfArrayList arr_l = new RemoveRangeOfArrayList();// By using add() method is to add // elements in this ArrayListarr_l.add("C");arr_l.add("C++");arr_l.add("JAVA");arr_l.add("DOTNET");arr_l.add("PHP");// Display ArrayListSystem.out.println("ArrayList Elements :" + arr_l);// By using removeRange() method is to remove the // element at index 2 and 3 like JAVA , DOTNETarr_l.removeRange(2, 4);// Display ArrayList System.out.println("arr_l.removeRange(2,4) : " + arr_l);} }

Output

輸出量

ArrayList Elements :[C, C++, JAVA, DOTNET, PHP] arr_l.removeRange(2,4) : [C, C++, PHP]

翻譯自: https://www.includehelp.com/java/arraylist-removerange-method-with-example.aspx

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