Difference between Exception and Error in Java | Exception Hierarchy in Java | Java Exceptions

Publicado em: 25 Maio 2022
no canal de: Krishna Sakinala (Automation Testing)

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Exceptions are the exceptional conditions that occur in a runtime environment. Most of the times exceptions are caused due to the code of our program.

Error:

Errors are the critical conditions that occur due to the lack of the system resources, and it can not be handled by the code of the program.

Exception:
An exception is caused due to code.
An exception is recoverable.
Exceptions are handled by few keywords like “try”, “catch” and “throw”.
When an exception is detected, it is thrown and caught by the “throw” and “catch” keywords correspondingly.
Exceptions are classified as Checked and Unchecked type Exceptions.
Exceptions can be checked or unchecked. So, they may or may not be detected by the compiler.
Exceptions are defined in “java.lang.Exception” package in Java.
NoSuchMethod, ClassNotFound, NullPointer, FileNotFound are few examples to Exceptions.

Error:
An error is caused due to lack of system resources.
An error is NOT recoverable.
Can not handle the error with the program code.
When an error is detected then the program will terminated abnormally.
Errors are classified as Unchecked Type.
Error occur at runtime and are not detected by the compiler.
Error are defined in “java.lang.Error” package in Java.
OutofMemory, StackOverFlow are few examples to Errors.

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