本文共 1976 字,大约阅读时间需要 6 分钟。
get() method is available in java.util package.
get()方法在java.util包中可用。
get() method is used to retrieve the element at the given index in this Arraylist.
get()方法用于检索此Arraylist中给定索引处的元素。
get() 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.
get()方法是一种非静态方法,因此可以通过类对象进行访问,如果尝试使用类名称访问该方法,则会收到错误消息。
get() method may throw an exception at the time of returning an element of the given indices.
在返回给定索引的元素时, get()方法可能会引发异常。
IndexOutOfBoundsException:- This exception may throw when the given indices are not in a range.
IndexOutOfBoundsException:-当给定索引不在范围内时,可能引发此异常。
Syntax:
句法:
public T get(int indices);
Parameter(s):
参数:
int indices – represents the index of the element to retrieve.
int index –表示要检索的元素的索引。
Return value:
返回值:
The return type of this method is T, it returns the element at the given index in this Arraylist.
此方法的返回类型为T ,它返回此Arraylist中给定索引处的元素。
Example:
例:
// Java program to demonstrate the example // of T get(int) method of ArrayList.import java.util.*;public class GetOfArrayList { public static void main(String[] args) { // Create an ArrayList with initial // capacity of storing elements ArrayList < String > arr_l = new ArrayList < String > (10); // By using add() method is to add // elements in this ArrayList arr_l.add("C"); arr_l.add("C++"); arr_l.add("JAVA"); arr_l.add("DOTNET"); arr_l.add("PHP"); // Display ArrayList System.out.println("ArrayList Elements :" + arr_l); // By using get(int) method is to return the // element at the given index in this ArrayList String element = arr_l.get(2); // Display Returned Element System.out.println("arr_l.get(2) : " + element); }}
Output
输出量
ArrayList Elements :[C, C++, JAVA, DOTNET, PHP]arr_l.get(2) : JAVA
翻译自:
转载地址:http://yttzd.baihongyu.com/