In a file named Student.java, write a class called Student with first name, last name, gender, and age attributes.

1. Give the class a three-argument and a four-argument constructor. The three- argument constructor should take the Students first name, gender and age as parameters and set the last name to be an empty String.

2. The four-argument constructor should take the Students first name, last name, gender and age as parameters.

3. Give the class a method that returns the age group of a student:

   1. Child: if a student is younger than 12

   2. Teenager: if a student is aged between 13 and 19

   3. Young Adult: if a student is aged between 20 and 25

   4. Adult: if a student is older than 25

4. Give the class a method called display which displays the Students attributes along with the age group that the Student is in.

5. In a separate file named Lab1.java create one Student object for each age group and invoke the display method for each object. Ensure that both constructors are used at least once.