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class Person{
private Long id;
private String name;
private int age;
...get()...
...set()...
}
public class PersonComparator implements Comparator<Person> {
public PersonComparator() {
super();
}
public int compare(Person o1, Person o2) {
if(o1!=null&&o2!=null){
if(o1.getName().equals(o2.getName())){
return o1.getId().compareTo(o2.getId());
}
return o1.getName().compareTo(o2.getName());
}
return o1.getAge().compareTo(o2.getAge());
}
}