Update param in list1<object> from list2<object> by using java 8

Raju Sidda :

I have two list of objects accounts and salaries and I need to iterate the list of objects. If the id matches I need to update the account object.

I have list1 and list2 these two objects are different object type. we need to update the object(param) in list1 with list2 object(param).

Example

if(accounts !=null && salaries!=null) { // checking for nulls
    for (Account obj1 : accounts) {// iterating objects
        for (Salary obj2 : salaries) {
            String id = ibj2.getId();
            if (id.equals(obj1.getId())) {// id checks  
                obj1.setxxxx(obj2.getxxxx());// set the value
            }
        }
    }
}  

I tried:

list1.stream().flatMap(x -> list2 .stream() .filter(y -> x.getId().equals(y.getId())));

Sharon Ben Asher :

The final operation, obj1.setxxxx(obj2.getxxxx()); requires to have both obj1 and obj2. that dictates the item that is streamed from both lists

list1.stream()
    .forEach(obj1 -> 
        list2.stream()
            .filter(obj2 -> obj1.getId().equals(obj2.getId()))
            .findFirst()
            .ifPresent(obj2 -> obj1.setxxxx(obj2.getxxxx()))
    );