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Demonstration of the try-catch-finally
This is a demonstration of the try-catch-finally exception handling mechanism in java programming language. It shows different mechanisms on how to handle exceptions, catch errors and show error messages.
/*******************************************************
* MYCPLUS Sample Code - http://www.mycplus.com *
* *
* This code is made available as a service to our *
* visitors and is provided strictly for the *
* purpose of illustration. *
* *
* Please direct all inquiries to saqib at mycplus.com *
*******************************************************/
// Demonstration of the try-catch-finally
// exception handling mechanism.
public class UsingExceptions {
public static void main( String args[] )
{
try {
throwException();
}
catch ( Exception e )
{
System.err.println( "Exception handled in main" );
}
doesNotThrowException();
}
public static void throwException() throws Exception
{
// Throw an exception and immediately catch it.
try {
System.out.println( "Method throwException" );
throw new Exception(); // generate exception
}
catch( Exception e )
{
System.err.println(
"Exception handled in method throwException" );
throw e; // rethrow e for further processing
// any code here would not be reached
}
finally {
System.err.println(
"Finally executed in throwException" );
}
// any code here would not be reached
}
public static void doesNotThrowException()
{
try {
System.out.println( "Method doesNotThrowException" );
}
catch( Exception e )
{
System.err.println( e.toString() );
}
finally {
System.err.println(
"Finally executed in doesNotThrowException" );
}
System.out.println(
"End of method doesNotThrowException" );
}
}
/**************************************************************************
* (C) Copyright 1999 by Deitel & Associates, Inc. and Prentice Hall. *
* All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
Tags: Java
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