When is v1 object in line 4 first subject to garbage collection? : Questions « Java Source And Data Type « SCJP

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2. Java Source And Data Type
3. Questions

import java.util.Vector;

public class MainClass {
  public static void main(String[] args) {
    Vector v1 = new Vector();
    Vector v2 = new Vector();
    v1.add("A");
    v1.add(v2);
    String s = (String) v1.elementAt(0); // line 1
    v1 = v2;                             // line 2
    v2 = v1;                             // line 3
    v1.add(s);
  }
}

A. Line 1
B. Line 2
C. Line 3