Difference Throw And Throws In Java
Understanding the Difference Between throw and throws in Java
Difference Throw And Throws In Java
In Java, “throw” is used as a keyword to manually throw an exception within a method, indicating that an error or exceptional condition has occurred. On the other hand, “throws” is used in method declarations to specify the exceptions that a method might throw during its execution, allowing the caller to be aware of potential exceptions that need to be handled. So, while “throw” is used to actively raise an exception, “throws” is used to declare the exceptions that a method may pass on to its caller.
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1 - In Java, the keyword ‘throw’ is used to explicitly throw an exception, while the keyword ‘throws’ is used in the method signature to declare that the method might throw a particular type of exception.
2) When using ‘throw’, you are indicating that a specific exception should be thrown at a certain point in the code, typically based on a certain condition or criteria.
3) On the other hand, ‘throws’ is used to specify the exceptions that a method might throw, allowing the calling code to be aware of the potential exceptions that need to be handled.
4) The ‘throw’ statement is used within the method body to throw an exception, while the ‘throws’ clause is used in the method signature to specify the exceptions that the method may throw.
5) ‘throw’ is used for throwing a single exception instance, while ‘throws’ is used to declare multiple exceptions that a method is capable of throwing.
6) When using ‘throw’, the exception is thrown at a specific point in the code execution, causing an immediate transfer of control to the nearest enclosing catch block.
7) On the other hand, ‘throws’ is part of the method signature and does not actively throw an exception but rather declares that the method could potentially throw certain types of exceptions.
8) It is mandatory to handle or declare checked exceptions when using the ‘throws’ keyword in the method signature, but it is optional to catch or declare unchecked exceptions thrown using the ‘throw’ keyword.
9) The ‘throws’ keyword is used to delegate the handling of exceptions to the calling code, while the ‘throw’ keyword is used to explicitly raise an exception within the method.
10) Understanding the difference between ‘throw’ and ‘throws’ is essential for Java developers to properly handle exceptions and ensure robust error management in their code.
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