I would like to know when NullPointerException comes in java. any help would be appreciated.
Raghu_Ganapm 0
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Jump to PostWhen you try to use a reference variable or expression that does not contain a reference to an Object - ie contains null. This may be because it hasn't been initialised, or it may be the result of calling a method that returns null following an error or other condition …
Jump to PostA NPE will also occur if an object is defined (and also initialized) inside one method,
and you try to access it from another method.
Solution: Define the object outside of the method (to make it global).
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