Converting ArrayList to HashMap [duplicate]

Question

Possible Duplicate:
Java: How to convert List to Map

I have arrayList

ArrayList<Product> productList  = new ArrayList<Product>();
 productList  = getProducts();  //Fetch the result from db

I want to convert to ArrayList to HashMap Like this

  HashMap<String, Product> s= new HashMap<String,Product>();

Please help me how to convert to HashMap.

Answer 1

The general methodology would be to iterate through the ArrayList, and insert the values into the HashMap. An example is as follows:

HashMap<String, Product> productMap = new HashMap<String, Product>();
for (Product product : productList) {
   productMap.put(product.getProductCode(), product);
}