I was asked these questions in my java interview and was asked to find issues with the code snippet.

First problem, I told them that the hashcode should not return static value as it will cause the values to be override in the hashmap.

public class Account {
    int id;
    float balance;
    public int hashCode() {
        return 42;
    }

Second problem, I told them the catch block is missing print stack trace statement for debugging.

public class Account {
    int id;
    float balance;
    public void processAccounts (){
        try{
            List<Account> accounts = loadAccounts();
            accountsProcessing (accounts);
        } catch (OutOfMemoryError e) {
            System.gc();
        }
    }
}