guest (guest)
Any java programmer knows that he has to create an instance of the child class. So one of the reason why getting nullpointerexception is

if you code a condition like this

if (xxx==10) {

while the complier finds that the value is null, the npex appears. Possible solution is to use

if (xxx!=null) first to avoid it.
2000-9-5 -05:00

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