package com.abelski.samples;

public class MyExceptionHandlingDemo
{
	public static void main(String args[])
	{
		int val = 123;
		try
		{
			aa(val);
		} 
		catch (MyException e)
		{
			e.printStackTrace();
		} 
		finally
		{
			System.out.println("finally always works");
		}
		val = -123;
		try
		{
			aa(val);
		} 
		catch (MyException e)
		{
			e.printStackTrace();
		} 
		finally
		{
			System.out.println("finally always works");
		}
	}

	static void aa(int num) throws MyException
	{
		System.out.println("aa start");
		bb(num);
		System.out.println("aa end");
	}

	static void bb(int val) throws MyException
	{
		System.out.println("bb start");
		cc(val);
		System.out.println("bb end");
	}

	static void cc(int number) throws MyException
	{
		System.out.println("cc start");
		if (number < 0)
		{
			throw new MyException("negative number");
		} 
		else
		{
			System.out.println(number + " log is " + Math.log(number));
		}
		System.out.println("cc end");
	}
}