class Exception3{

	public static void main(String args[]){
		//try{
			/*
			SuperOne so = new SuperOne();
			so.setVar(-5);
			System.out.println(so.getVar());
			*/
			SuperTwo st = new SuperTwo();
			st.setSO(-5);
			System.out.println(st.so.getVar());
		/*
		}catch(oneException oe){
			oe.printStackTrace();
		}catch(Exception e){
			e.printStackTrace();
		}//catch
		*/
	}//main

}//Exception3

class oneException extends RuntimeException{
	public oneException(String message){
		super(message);
		System.out.println(message);
	}

}//oneException

class SuperOne{
	int var;
	SuperOne(){}

	public void setVar(int v){
		if(v < 0)
			throw new oneException("v cannot less than 0, set as 1.");
		else
			var = v;
	}//setV1

	public int getVar(){
		return var;
	}//getV1()

}//SuperOne

class SuperTwo{

	SuperOne so;
	SuperTwo(){
		so = new SuperOne();
	}

	public void setSO(int i) throws oneException{
		try{
			so.setVar(i);
		}catch(oneException e){
			so.var = 1;
		}//catch

	}//setSO()

}//SuperTwo