When chance of exception and not to terminate the 
application

To detect the error.

we are useing the try/catch for handling the 
exceptions ,and then we can able to read and understand  
the exception easily.

try is used to enclose the code which is supposed to throw 
an exception
catch is used to catch the exception which is raised with 
in the try block

in order to over come an abnormal condition try and catch 
block is used

Try and Catch block is used for Exception handling..
Try block is used for monitor the errors  and using catch
block we can shows to users what type of Exception occurred
in our program ...see the following Example code it can be
useful..        


class ExceptionExample
{
	public static void main(String args[]) 
	{
		int d, a;
	try
		{
	                        	d = 0;
			a = 42 / d;
			System.out.println("This will not be printed.");
		}
	catch (ArithmeticException e) 
		{
			System.out.println("Division by zero.");// Here shows
Exception to user
		}
		
	}
}