vector clone

向量類clone()方法 (Vector Class clone() method)

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

  clone()方法在java.util包中可用。

• clone() method is used to copy or clone or return a shallow copy of this Vector.

  clone()方法用于復制，克隆或返回此Vector的淺表副本。

• clone() 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.

  clone()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。

• clone() method may throw an exception at the time of cloning an object.

  clone()方法在克隆對象時可能會引發異常。

  CloneNotSupportedException: This exception may throw when this Vector class unsupported a Cloneable interface.

  CloneNotSupportedException ：當此Vector類不支持Cloneable接口時，可能會引發此異常。

Syntax:

句法：

public Object clone();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of the method is Object, it returns cloned copy of this Vector.

方法的返回類型為Object ，它返回此Vector的克隆副本。

Example:

例：

// Java program to demonstrate the example // of Object clone() method of Vector import java.util.Vector;public class CloneOfVector {public static void main(String[] args) {// Instantiates a Vector object with// initial capacity of "10"Vector < String > v = new Vector < String > (10);Vector < String > clone_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 Vector System.out.println("v: " + v);// By using clone() method is to// clone this vector vclone_v = (Vector) v.clone();// Display Cloned VectorSystem.out.println("v.clone(): " + clone_v);} }

Output

輸出量

v: [C, C++, JAVA] v.clone(): [C, C++, JAVA]

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

vector clone

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