| 9. 45. 35. 复制与克隆载体 |
|
|
|
|
Cloning a vector with clone() is like making a shallow copy of the vector. |
A new vector is created with each object reference copied from the original vector. |
Similar to calling the Vector constructor that accepts a Collection. |
All elements of the two vectors will effectively point to the same set of objects. |
|
import java.util.Collections;
import java.util.Vector;
public class MainClass {
public static void main(String args[]) {
Vector v1 = new Vector();
v1.add("A");
v1.add("C");
v1.add("B");
Vector v2 = (Vector) v1.clone();
Collections.sort(v2);
System.out.println(v1);
System.out.println(v2);
}
}
|
|
[A, C, B]
[A, B, C] |