package dk.itu.oop.lecture8;

class TryCatchExample{
	static class ExceptionA extends Exception {
		int n;
		ExceptionA(int n){this.n = n;}
		public String toString(){return "A: " + n;}
	};
	static class ExceptionB extends Exception {
		int n;
		ExceptionB(int n){this.n = n;}
		public String toString(){return "B: " + n;}
	};
	static class ExceptionC extends ExceptionA{
		ExceptionC(int n){super(n);};
		public String toString(){return "C: " + n;}
	}

	static void pip(int i) throws ExceptionA{
		if (i>4)
			throw new ExceptionA(i);
		else
			throw new ExceptionC(i);
	}

	static int pap(int i) throws ExceptionB {
		if (i<0)
			throw new ExceptionB(i);
		else
			try{
				pip(i);
				return 7;
			}catch(ExceptionC ec){
				try{
					return pap(i-2);
				}catch(ExceptionB eb){
					return eb.n;
				}finally{
					System.out.println("Finally inner pap");
				}
			}catch(ExceptionA ea){
				throw new ExceptionB(i);
			}finally{
				System.out.println("Finally outer pap");
			}
	}

	public static void main(String[] a){
		try{
			System.out.println("pap returned: " + pap(1) );
		}catch(ExceptionB eb){
			System.out.println("pap failed:" + eb);
		}
	}
}