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       #Post#: 17--------------------------------------------------
       Handling Null Pointer Exceptions
       By: asim roy Date: September 14, 2023, 6:19 am
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       Now if the class is instantiated by calling its constructor it
       will be created in the computer memory An object of the class
       and a reference to that object is returned to the instance
       reference variable. The following example demonstrates this
       concept People Students also learned that in the above example a
       variable of type points to the memory address of an object of
       class. Now call the method and a value is printed on the screen
       which is the value of the member variable. Now if you assign a
       value to a reference via keyword somehow make it point to a
       reference and then call the same method on it the compiler will
       not generate.
       Any error but if you execute the code it will crash at the point
       where the method was called on the reference variable  as it
       will point to. For example if you execute the Phone Number List
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       following code a null pointer
       exception will occur null The output of the above code will be
       Exception in thread This error message indicates that an
       exception of type package has occurred. Exceptions in are
       treated as classes. Code The following example demonstrates a
       version of the example used to explain a null pointer exception.
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       Class Person public integer age public string name public return
       age public voidage age classSchedule static void mainstring
       argument Person In the above class program if will point to then
       call again on the instance variable method a
       NullPointerException occurs and a message is displayed
       indicating that it was not handled. is the version of .
       Interested in learning more about exceptions? Study courses on.
       There are two ways to handle Null Pointer Exceptions. The first
       way is to make sure that a reference variable does not point to
       a null reference before using it.
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