Difference Between Throws And Throw In Java
Understanding the difference between throws and throw in Java
Difference Between Throws And Throw In Java
In Java, “throw” is a keyword used to explicitly throw an exception within a method. It is used to interrupt normal program flow and transfer control to the exception-handling code. On the other hand, “throws” is a keyword used in a method signature to declare that the method may throw one or more types of exceptions. This is used to indicate to the caller of the method that they need to handle or propagate the exceptions that may be thrown by the method. Overall, “throw” is used to actually throw an exception, while “throws” is used to declare that a method may throw an exception.
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1 - In Java, “throw” is a keyword used to manually throw an exception, while “throws” is used to declare an exception that a method may throw.
2) The “throw” keyword is used within a method to explicitly throw an exception, whereas the “throws” keyword is used in the method signature to indicate that the method may throw a particular type of exception.
3) When you use “throw”, you are creating and throwing a new exception object, while “throws” is more of a declaration or specification of the possible exceptions a method may throw.
4) “throw” is typically used to handle exceptional situations that occur during the execution of a program, allowing you to customize the exception handling logic, while “throws” is more about indicating to the caller of the method the potential exceptions they need to handle.
5) Using “throw” allows you to provide custom error messages or handle specific scenarios where an exception needs to be raised, whereas “throws” is more about defining the type of exceptions that could be thrown from a method.
6) When you use “throw”, the exception is thrown immediately and the control is transferred to the exception handling code, whereas with “throws”, the exception is not handled within the method itself but rather passed on to the calling method or the caller.
7) The “throw” statement is used to raise an exception, while the “throws” clause is used to declare a method that might throw an exception that needs to be handled by the caller.
8) “throw” is used inside the method body to throw an exception object, while “throws” is used in the method signature to signal to the caller that the method can throw a checked exception that needs to be handled.
9) Both “throw” and “throws” are essential mechanisms in Java exception handling, and understanding the difference between them is crucial for writing robust and error free code.
10) In your training program, make sure to provide practical examples and exercises that demonstrate the usage of both “throw” and “throws” in Java programs to help students grasp the concept effectively.
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