Difference between errors and exceptions?
Error : In Java Error indicates the problem which can't be controlled or guessed when it will occur. It indicates that there is a serious problem which an application shouldn't be try to catch this error. For example OutOfMemory error. Generally error indicates the error related to system and/or linked resources. Generally an error occurs at the compilation time.
Exception : In Java an Exception indicates the problem which can be handled and guessed. In a reasonable application it indicates the problem that should be try to catch and the application behave normally. For Example IOException. Exceptions are of two types Checked exceptions and Unchecked exceptions. Generally an exception occurs at execution time.
java.lang.Throwable is the base class of both classes java.lang.Error and java.lang.Exception
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