/// some boring classes sharing some commmon traits, but not related
//  by inheritance... (for purpose of illustrating 'crosscutting concerns')

class student 
{
    public final String name;
    private double gpa;  // note private
    public student(String n)
    {
	name=n; 
	gpa = ((int)(Math.random()*401))/100.0;
    }
    public String toString() { return "student "+name+" has a "+gpa+" GPA"; }

    public void run()
    { System.out.println("huff and puff..."); }
}

class vehicle
{
    public final String make;
    public final String model;
    public final int year;
    public int price = 30000;
    public vehicle(String b, String m, int y) {make=b; model=m; year=y;}
    public String toString() {return year+" "+make+" "+model;}

    public void run()
    { System.out.println("zoom zoom"); }
}//vehicle


class pc
{
    public final String cpu;
    public int RAM;  // in GB
    public int Storage;  // in TB
    public int price = 1000;
    public pc(String c, int r, int s)
    { cpu=c;  RAM=r;  Storage=s; }
    public void run()    // note: not related to other .run methods
    { throw new RuntimeException("System Fault. Must Reinstall OS"); }
}

public class aop19
{
    public static void main(String[] av)
    {
     try {
	System.out.println("What the hell is this AspectJ thing?");
        System.out.println("csc123 sucks and Liang is the worst professor ever!\n");
	
	student s = new student("Nev Erstudy");
	vehicle v = new vehicle("Honda","Accord",2009);
	pc yourpc = new pc("intel i7",16,5); // 16gb ram, 5tb disk
	s.run();
	v.run();
	yourpc.run();
     } catch(RuntimeException re) {System.out.println(re);}
    }//main
}