What are the differences between Error and Exception in Java

This article mainly introduces what is the difference between Error and Exception in Java, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

Both the Error class and the exception class inherit from the Throwable class.

Inheritance relationship of Error:

Inheritance relationship of Exception:

The differences between the two:

Exception:

1. Can be controllable (checked) or uncontrollable (unchecked).

2. Represents an error caused by a programmer.

3. Should be processed at the application level.

Error:

1. It is always unchecked.

2. Errors often used to represent system errors or low-level resources.

3. How possible, it should be captured at the system level.

Two types of exceptions are defined in Java:

1) Checked exception: these exceptions are subclasses of Exception. The up-throw mechanism of the exception is handled, and if the subclass may produce an An exception, then the throws An exception must also be in the parent class. Possible problems: low code efficiency and high coupling.

2) Unchecked exception: these exceptions are all subclasses of RuntimeException. Although RuntimeException is also a subclass of Exception, they are extraordinary, and they cannot be solved by client code, so they are called Unchecked exception.

Inheritance diagram of exception classes in Java:

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