MainClass_Uni.java

package Practice.poly_morphism;

public class MainClass_Uni 
{


public static void main(String[] args)
{
    University_polymorphism obj = new University_polymorphism();
    Uper_Staff_uni obj1 = new Uper_Staff_uni();
    Lower_Staff_uni obj2 = new Lower_Staff_uni();
    
    obj.Show_File();
    obj1.Show_File();
    obj2.Show_File();
    
}

    
}