[Solved] How to iterate over Array List and modify elements inside the object in Java?

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Assuming that class CatchesItem has time field defined as LocalDateTime, the check for today’s timestamp may be implemented as follows:

import java.time.*;

// ...
LocalDate today = LocalDate.now();
for (CatchesItem item : items) {
    if (today.equals(item.getTime().toLocalDate())) {
        item.setAmount(item.getAmount() + 5); // add some value to amount
    }
}
items.forEach(System.out::println);

Output (for the input data as of Feb 18)

CatchesItem(amount=1, condition=0.0, time=2021-02-17T17:10:42)
CatchesItem(amount=4, condition=1.0, time=2021-02-17T17:10:48)
CatchesItem(amount=10, condition=2.0, time=2021-02-18T17:10:54)

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solved How to iterate over Array List and modify elements inside the object in Java?