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For the methods:
public void doSomething(mObject1 ob){
//Code A
}
public void doSomething(mObject2 ob){
//Code B
}
Whats the code executed when calling and why?
doSomething(null);
you cannot call doSomething with a null parameter. The compiler will complain. In all other cases the signature of the method is matched.However this would work :