java setsize_Java Vector setSize()方法与示例
java setsize
向量類setSize()方法 (Vector Class setSize() method)
setSize() method is available in java.util package.
setSize()方法在java.util包中可用。
setSize() method is used to set the new size of this vector and when new size (n_size) > current size then extended size will be set to null initially.
setSize()方法用于設置此向量的新大小,并且當新大小(n_size)>當前大小時,擴展大小最初將設置為null。
setSize() 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.
setSize()方法是一個非靜態方法,只能通過類對象訪問,如果嘗試使用類名稱訪問該方法,則會收到錯誤消息。
setSize() method may throw an exception at the time of setting the size of this Vector.
setSize()方法在設置此Vector的大小時可能會引發異常。
ArrayIndexOutOfBoundsException: This exception may throw when the given parameter is not in a range.
ArrayIndexOutOfBoundsException :如果給定參數不在范圍內,則可能引發此異常。
Syntax:
句法:
public void setSize(int n_size);Parameter(s):
參數:
int n_size – represents the new size to be set for this Vector.
int n_size –表示要為此Vector設置的新大小。
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 ,不返回任何內容。
Example:
例:
// Java program to demonstrate the example // of void setSize(int n_size) method // of Vector import java.util.*;public class SetSizeOfVector {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.size());// By using setSize() method is to// set the new size of this vectorv.setSize(20);// Display updated sizeSystem.out.println("v.setSize(20): " + v.size());} }Output
輸出量
v: 3 v.setSize(20): 20翻譯自: https://www.includehelp.com/java/vector-setsize-method-with-example.aspx
java setsize
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