1. Sort by Name and Age

package DPM;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int lines = Integer.parseInt(scan.nextLine());
        List<Person> people = new ArrayList<>();
        Person man = null;
        for (int i = 0; i < lines; i++) {
            String[] line = scan.nextLine().split(" ");
            String fname = line[0];
            String sname = line[1];
            int age = Integer.parseInt(line[2]);
            man = new Person(fname, sname, age);
            people.add(man);
        }
        people.sort((fperson, sperson) -> {
            int comp = fperson.getFname().compareTo(sperson.getFname());
            if (comp != 0){
                return comp;
            }else {
                return Integer.compare(fperson.getAge(), sperson.getAge());
            }
        });
        for (Person person : people) {
            System.out.println(person.toString());
        }
    }
}
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package DPM;
public class Person {
    private String fname;
    private String sname;
    private int age;
    public Person(String fname, String sname, int age){
        this.fname=fname;
        this.sname=sname;
        this.age=age;
    }
    public void setFname(){
        this.fname=fname;
    }
    public void setSname(){
        this.sname=sname;
    }
    public void setAge(){
        this.age=age;
    }
    public String getFname(){
        return fname;
    }
    public String getSname(){
        return sname;
    }
    public int getAge(){
        return age;
    }
    @Override
    public String toString() {
        return String.format("%s %s is %d years old.",
                this.getFname(), this.getSname(), this.getAge());
    }
}