A simple Lombok Example, documented here for peace.

Student.java

package com.topriddy.app;

import lombok.Data;
import lombok.NonNull;

@Data
public class Student {
	public enum Sex {MALE, FEMALE};
	
	@NonNull private String matricNumber;
	private String lastName;
	private String firstName;
	private int age;
	private Sex sex;
}

StudentApp.java

package com.topriddy.app;

import com.topriddy.app.Student.Sex;

public class StudentApp {

	public static void main(String args[]){
		Student student = new Student("CSC/05/64/39");
		student.setFirstName("Temitope");
		student.setLastName("Faro");
		student.setSex(Sex.MALE);
		student.setAge(43);
		
		System.out.println("Student: " + student);
	}
}