向量類的Capacity()方法 (Vector Class capacity() method)

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

  Capacity()方法在java.util包中可用。

• capacity() method is used to return the current capacity (i.e. initially, how many object exists) of this Vector object.

  Capacity()方法用于返回此Vector對象的當(dāng)前容量(即，最初存在多少個對象)。

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

  Capacity()方法是一種非靜態(tài)方法，只能使用類對象訪問，如果嘗試使用類名訪問該方法，則會收到錯誤消息。

• capacity() method does not throw an exception at the time of returning capacity.

  Capacity()方法在返回容量時不會引發(fā)異常。

Syntax:

句法：

public int capacity();

Parameter(s):

參數(shù)：

• It does not accept any parameter.

  它不接受任何參數(shù)。

Return value:

返回值：

The return type of the method is int, it gets the current capacity of this Vector.

方法的返回類型為int ，它獲取此Vector的當(dāng)前容量。

Example:

例：

// Java program to demonstrate the example // of int capacity() method of Vector import java.util.*;public class CapacityOfVector {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");// By using size() methos is to return the // size i.e. the number of element exists// Display Vector SizeSystem.out.println("v.size(): " + v.size());// By using capacity() method is to return the // Vector capacity// Display Vector CapacitySystem.out.println("v.capacity(): " + v.capacity());} }

Output

輸出量

v.size(): 3 v.capacity(): 10

翻譯自: https://www.includehelp.com/java/vector-capacity-method-with-example.aspx

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