Conditional add of vectors... **RESOLVED**

Here s my problem.

I have 2 vectors. myVector and temp.

If myVector is empty or equal to null I just want to copy the value of temp into it.
If myVector is not empty then I want to append temp to it.

Here is my code:

Code:

---


 if (myVector == null){
                myVector = DocParser1.getVector();
                System.out.println("Vector equals null" + myVector);
            }
            else {
                myVector.addAll(temp);
                System.out.println("Vector does not equal null" + myVector);
            }

---

The code works fine when myVector is equal to null.

But if I add this line of code..

myVector.add(0,"HELLO");

Before the block if statement then nothing happens. Even the println statement does not execute.



I have tried the isEmpty function.

Any ideas?

Your Vector cannot be null since you are adding an element to it with the line myVector.add(0,"HELLO"); so its obvious that you already have a refrence to it. With the following code the else statement is always executed.

Code:

---

import java.util.*;

 public class F{
  public static void main(String[] args){

  Vector v = new Vector();
  v.addElement("Poo");
  v.addElement("Poop");

  if (v == null){
      System.out.println("Vector equals null" + v);
   
    }else {
    System.out.println("Vector does not equal null" + v);
      }
  }
 }

---

Thanks. I found the answer here.

http://forums.anandtech.com/messagev...GE=1&zb=619775

Which was essentially the same as yours. I was missing the new Vector() assignment.

Thought I got alot more guff there.

Anytime. :)