ArrayList Retrieve object by Id

Question

Suppose I have an ArrayList of my custom Objects which is very simple. For example:

class Account
{
public String Name;
public In         


        

Answer 1

Assuming that it is an unordered list, you will need to iterate over the list and check each object.

for(int i = 0; i < sizeOfList; i++) {
    list.get(i).equals(/* What you compare against */)
}

There's also the other for syntax:

for(Account a : accountList)

You could put this loop into a helper method that takes an Account and compares it against each item.

For ordered lists, you have more efficient search options, but you will need to implement a search no matter what.