Problem with Hashtable values

Hi,
I am getting problem with hashtable.
I am putting values dynamically into the hashtable and then after i am redefining my value. Means i am putting vector in to the hashtable for every different key. I am clearing my vector after every entry into the hashtable.
Whenever i am retreiving the data my hashtable retrieves values. But the value in hashtable gives problems and gives zero size vector..

How can i use my hashtable and vector.


Example code :

Hashtable indhash=new Hashtable();
Vector indvec1=new Vector();
String st1=null;
for(int i=0;i<indstr.length;i++)
{
if(st1==null)
st1=indstr[i][0];
if(!st1.equals(indstr[i][0]))
{
indhash.put(st1,indvec1);
st1=indstr[i][0];
indvec1.clear();
indvec1.addElement(indstr[i][1]);
}
else
{
indvec1.addElement(indstr[i][1]);
}
if(i==indstr.length-1)
{
indhash.put(indstr[i][0],indvec1);
indvec1.clear();
}
}

after this when retriving my hashtable gives zero length vector from hastable.
Please help Me.

Its'
Murthy

Is this C ?