Comparable and comparator both are an interface that can be used to sort the elements of the collection. Comparator interface belongs to java.util package while comparable belongs to java.lang package ...
Sempre que quisermos ordenar/comparar objetos complexos (Pessoa, Casa, Carro, Endereco,etc...) precisamos usar o Comparator. Perceba que temos um objeto complexo, contendo vários attributes. O java ...
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