Vector and my object??

Question

hi all,
I am reading a binary file, then creating the object and adding that object in my vector. How can i get it back according to its id? let is say i added all the customers read from file and now i want to get customer 3?
int thisId=dis.readInt();
String thisName=dis.readUTF();
double thisBalance=dis.readDouble();
Customer cus=new Customer(thisName,thisId,thisBalance);
cusList.add(cus);
abdul

Answer 1

Best possible way is to use Hashtable and put customerid as key and Customer object
as value.
Modify your code with,
Customer cus=new Customer(thisName,thisId,thisBalance);
some-hashtable-object.put(thisId,cus);
now if you want to take particular Customer
use
Customer c = (Customer)some-hashtable-object.get(any customerid);
Now if you don't want to use Hashtable and continue with Vector then you have to iterate the,
Vector and whether object has id 3 .
like
for(int i=0;i<Vectorobject.size();i++){
Customer c = (Customer) Vectorobject.get(i);
id = c.getCustomerId() // or any method you have to get id;
// check it....
But i think Hashtable is the better way to use here.
I think you understand what i want to say .
Tarak.