import java.io.*;

public class ExceptionMain 
{
 	public static void main (String [ ] args) 
    	{
        	ExceptionHandling.try1();
    	} // method main
} // class ExceptionMain



class ExceptionHandling 
{
    	public static void try1() 
    	{
        	System.out.println ("start of try1");
	       	try 
        	{
        	    	try2();
        	} // try
        	catch (IOException e) 
        	{ 
            		System.out.println (e + "something went wrong with IO");
       		} // catch
        	System.out.println ("end of try1");
    	} // method try1


	public static void try2() throws IOException 
	{
       		System.out.println ("start of try2");
       		try3();
        	System.out.println ("end of try2");
 	} // method try2


	public static void try3() throws IOException 
	{
       		System.out.println ("start of try3");
       		throw new IOException ("IO error in method try3: ");        	
 	} // method try3

} // class ExceptionHandling