Difference Between Throw And Throws Keyword In Java
distinguishing 'throw' and 'throws' keywords in Java
Difference Between Throw And Throws Keyword In Java
In Java, the “throw” keyword is used to explicitly throw an exception within a method, allowing the programmer to handle error conditions. On the other hand, the “throws” keyword is used in the method signature to declare the type of exceptions that a method might throw, which helps in informing the caller of potential exceptions that need to be handled. In summary, “throw” is used to throw an exception, while “throws” is used to declare the exception that a method may throw.
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1 - The ‘throw’ keyword in Java is used to explicitly throw an exception, while the ‘throws’ keyword is used in method signatures to declare the type of exception that a method might throw.
2) When you use the ‘throw’ keyword, you are disrupting the normal flow of the program by creating an exception and throwing it to be caught elsewhere.
3) On the other hand, the ‘throws’ keyword is used for method declaration to specify the types of exceptions that the method could potentially throw during its execution.
4) By using the ‘throw’ keyword, you are directly indicating that an exceptional condition has occurred within the method and you are handling it there.
5) Whereas the ‘throws’ keyword in the method signature is more of a warning to the caller that this method can potentially throw certain exceptions and they should be prepared to handle them.
6) The ‘throw’ keyword is followed by an instance of an exception class that indicates the specific type of exception being thrown.
7) The ‘throws’ keyword is followed by a list of exception classes that the method may throw, separated by commas.
8) When the ‘throw’ keyword is used, the developer is responsible for handling the exception within the method or propagating it up the call stack.
9) With the ‘throws’ keyword, the developer is simply indicating the possible exceptions that may be thrown, leaving the handling to the caller of the method.
10) In summary, ‘throw’ is used within the method to create and throw an exception, while ‘throws’ is used in the method signature to specify the types of exceptions that could be thrown during the method's execution.
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