Java Vector setElementAt()方法与示例
向量類setElementAt()方法 (Vector Class setElementAt() method)
setElementAt() method is available in java.util package.
setElementAt()方法在java.util包中可用。
setElementAt() method is used to set the given element (ele) at the given indices in this Vector.
setElementAt()方法用于在此Vector中的給定索引處設(shè)置給定元素(ele)。
setElementAt() 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.
setElementAt()方法是一個(gè)非靜態(tài)方法,只能通過(guò)類對(duì)象訪問(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。
setElementAt() method may throw an exception at the time of setting an element.
setElementAt()方法在設(shè)置元素時(shí)可能會(huì)引發(fā)異常。
ArrayIndexOutOfBoundsException: This exception may throw when the given first parameter is not in a range.
ArrayIndexOutOfBoundsException :如果給定的第一個(gè)參數(shù)不在范圍內(nèi),則可能引發(fā)此異常。
Syntax:
句法:
public void setElementAt(Element ele, int indices);Parameter(s):
參數(shù):
Element ele – represents the element to be set at the given indices.
元素ele –表示要在給定索引處設(shè)置的元素。
int indices – represents the indices of the given element to be set.
int index –表示要設(shè)置的給定元素的索引。
Return value:
返回值:
The return type of the method is void, it returns nothing.
該方法的返回類型為void ,不返回任何內(nèi)容。
Example:
例:
// Java program to demonstrate the example // of void setElementAt(Element ele, int indices) method // of Vector import java.util.*;public class SetElementAtOfVector {public static void main(String[] args) {// Instantiates a Vector object with// initial capacity of "10"Vector < String > v = new Vector < String > (10);// By using add() method is to add the// elements in this vv.add("C");v.add("C++");v.add("JAVA");// Display VectorSystem.out.println("v: " + v);// By using setElementAt() method is to// set the element at the given indicesv.setElementAt("SFDC", 2);// Display updated vectorSystem.out.println("v.setElementAt(SFDC, 2): " + v);} }Output
輸出量
v: [C, C++, JAVA] v.setElementAt(SFDC, 2): [C, C++, SFDC]翻譯自: https://www.includehelp.com/java/vector-setelementat-method-with-example.aspx
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