KITFORMA · EDITORIAL ANSWER
Why does removing the value 1 from List<Integer> remove the second row instead?
KitForma editorial guide. Overloaded methods can interpret the same-looking number as an index or an object. Check the selected signature before investigating list ordering.
Step-by-step answer
Overloaded methods can interpret the same-looking number as an index or an object. Check the selected signature before investigating list ordering.
Use
values.remove(Integer.valueOf(1)) when removing the first matching value, and values.remove(1) when removing the element at index one. If all matches must disappear, use a clearly stated predicate with removeIf on a mutable list. Preserve a copy if the original data is needed elsewhere.
Verify with a list whose second element is not 1, then repeat with duplicates and an absent value. Object removal returns whether a match existed; index removal has different return and bounds behavior. This distinction applies to overload resolution, not to one-based versus zero-based display labels alone.Sources and verification
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