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Java > Learn Java > What is the purpose of using throws keyword in java?
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What is the purpose of using throws keyword in java?

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The throws statement is how you create an exception stack trace. There isn't much magic in java--it's not some underlying system mystery that creates an exception, it is simply a "Throw" statement, and therefore the last few entries in any stack trace will probably be throw. It's not JUST the last one...
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The throws statement is how you create an exception stack trace. There isn't much magic in java--it's not some underlying system mystery that creates an exception, it is simply a "Throw" statement, and therefore the last few entries in any stack trace will probably be throw. It's not JUST the last one because in many cases exception handling consists of something like this: try { do something that might cause an exception catch(ExpectedException e) { throw new DifferetnException(e); } This lets you change what type of exception it was or add a better textual description or even handle some of the exceptions while re-throwing the others. Because of this it is often the last few levels (and maybe some in-between) that are caused by the "Throw" statement. read less
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The 'throws' keyword is used to delegate the exception handling mechanism to the caller of the function. It is generally put in the function definition, thereby indicating to the caller of the function to handle it using try and catch. public static void fun() throws MyException { //code } public static...
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The 'throws' keyword is used to delegate the exception handling mechanism to the caller of the function. It is generally put in the function definition, thereby indicating to the caller of the function to handle it using try and catch. public static void fun() throws MyException { //code } public static void main (String args[]) { try { fun(); } catch { } } read less
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Unlimited learning from classes 6 to 10 (Mathematics) and Programming languages (C,C++,Java)

Throws kW is used with method signature. With throws k/w exception is not handled. It should be handled with try catch block.With throws k/w checked exceptions can be propagated which can not be propagated with throw k/w.
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The keyword throws in Java is used to declare an exception. It is instruction to the programmer that exception may occur so make provision for exception handling so that normal flow can be maintained.
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Trainer

throwing an exception explicitly
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If a function is not handling the exception throws clause can be added to the function signature. This includes the list of exceptions which can be thrown by the function
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The throw keyword is used to throw an exception from within a method. When a throw statement is encountered and executed, execution of the current method is stopped and returned to the caller. Whereas the throws keyword is used to declare that a method may throw one or some exceptions.
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The throw keyword is used to throw an exception from within a method. When a throw statement is encountered and executed, execution of the current method is stopped and returned to the caller. Whereas the throws keyword is used to declare that a method may throw one or some exceptions.

 

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To Throw an exception
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It is used to declare an exception. It gives an information to the programmer that there may occur an exception so it is better for the programmer to provide the exception handling code so that normal flow can be maintained. Exception Handling is mainly used to handle the checked exceptions. If there...
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It is used to declare an exception. It gives an information to the programmer that there may occur an exception so it is better for the programmer to provide the exception handling code so that normal flow can be maintained. Exception Handling is mainly used to handle the checked exceptions. If there occurs any unchecked exception such as NullPointerException, it is programmers fault that he is not performing check up before the code being used. read less
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Throws may be used, if we want o execute block of segment of code within it i.r throws section. if error encountered and we wish to execute certain code for that error we can use throws not necessary but may be use for better response.
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