User.java

package com.company;

//user class
public class User{
    private long id;
    private String first_name;
    private String last_name;
    private int age;
    private String gender;
  
    //Constructor
    public User(long id, String first_name, String last_name, int age, String gender) {
        this.id = id;
        this.first_name = first_name;
        this.last_name = last_name;
        this.age = age;
        this.gender = gender;
    }

    //getters and setters
    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getFirst_name() {
        return first_name;
    }

    public void setFirst_name(String first_name) {
        this.first_name = first_name;
    }

    public String getLast_name() {
        return last_name;
    }

    public void setLast_name(String last_name) {
        this.last_name = last_name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }
}