Can we put the bunch of object into List ?

Question

List.add(int indexkey , Object obj.)
Class Customer
here my question is that ... can we put the bunch of Customer object like : c1, c2 , c3 into List as object as a second argument with single index .. ???

Answer 1

You can't do that. What you can do is insert in your list an Costumer array ...
List myWeirdCostumerList = new ArrayList();//I like ArrayList. Pick your preffered one...
Costumer[] myCostumers = new Costumer[x];
//fill your array
myWeirdCostumerList.add(indexKey, myCostumers);...or even another list of Costumer
List myWeirdCostumerList = new ArrayList();//I like ArrayList. Pick your preffered one...
List myCostumers = new ArrayList();
myCostumer.add(new Costumer(...);
myCostumer.add(new Costumer(...);
myCostumer.add(new Costumer(...);
//...keep filling
myWeirdCostumerList.add(indexKey, myCostumers);But, as georgemc said, you may be in trouble retrieving a certain Costumer object...