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Exception in Inheritance (overrridding)

Satyajit Bhadange
Ranch Hand

Joined: May 13, 2010
Posts: 104

when we overrride method and if method we are overrriding throws exception but overridden method doesnt do the same java prog compiles but if case is exact opposite of mention then compiler doesnt allow me to compile my java prog...

Please ans with example which would be more clearer.

Problems And Solutions - Algorithms
Sona Patel
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Joined: Mar 30, 2009
Posts: 75
refer this for clarity...
Tom Reilly

Joined: Jun 01, 2010
Posts: 618
Consider this:

1. Class A implements foo()
2. Class B extends A, overrides foo() and thows IOException
3. You create an instance of B and assign it to a reference variable of type A.
4. You call the foo() method.

The compiler would not force you to catch IOException, which is a checked exception, because it doesn't know you actually have an instance of B. This would be bad.
Satyajit Bhadange
Ranch Hand

Joined: May 13, 2010
Posts: 104
It is sorta covered in the JavaRanch Style Guide.
subject: Exception in Inheritance (overrridding)
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