What are the differences between checked and unchecked exceptions?
Author: jaspreet …….. (http://www.jguru.com/guru/viewbio.jsp?EID=1354140), Jan 9, 2008Unchecked exceptions :* represent defects in the program (bugs) – often invalid arguments passed to a non-private method. To quote from The Java Programming Language, by Gosling, Arnold, and Holmes : “Unchecked runtime exceptions represent conditions that, generally speaking, reflect errors in your program’s logic and cannot be reasonably recovered from at run time.” * are subclasses of RuntimeException, and are usually implemented using IllegalArgumentException, NullPointerException, or IllegalStateException * a method is not obliged to establish a policy for the unchecked exceptions thrown by its implementation (and they almost always do not do so)Checked exceptions :* represent invalid conditions in areas outside the immediate control of the program (invalid user input, database problems, network outages, absent files) * are subclasses of Exception * a method is obliged to establish a policy fo
