RxJava: How to convert List of objects to List of another objects

Question

I have the List of SourceObjects and I need to convert it to the List of ResultObjects.

I can fetch one object to another using method of ResultObject:

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Answer 1

Don't break the chain, just like this.

Observable.from(Arrays.asList(new String[] {"1", "2", "3", }))
.map(s -> Integer.valueOf(s))
.reduce(new ArrayList, (list, s) -> {
    list.add(s);
    return list;
})
.subscribe(i -> {
    // Do some thing with 'i', it's a list of Integer.
});