
What is wrong in the following code?
public class Test {
public static void main(String[] args) {
Person[] persons = {new Person(3), new Person(4), new Person(1)};
java.util.Arrays.sort(persons);
}
}
class Person {
private int id;
Person(int id) {
this.id = id;
}
}

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Introduction to Java Programming and Data Structures, Comprehensive Version Plus MyProgrammingLab with Pearson EText -- Access Card Package
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