The code works fine until I try to make the code into a constructable class. When I attempt to construct an object from it I get the error
\"Default
Just enclose your call to the Constructor in a Try-Catch.
Default constructor implicitly invokes super constructor which is assumed to be throwing some exception which you need to handle in sub class's constructor . for detailed answer post the code
class Base{
public Base() throw SomeException{
//some code
}
}
class Child extends Base{
public Child(){
//here it implicitly invokes `Base()`, So handle it here
}
}
Any subclass which extends a super class whose default constructor handles some exception, a subclass must have a default constructor which implements the exception
class Super{ public Super() throws Exception {}}
class Sub extends Super{public Sub()throws Exception{//}}
Base class super.constructor is implicitly invoked by the extending class constructor:
class Base
{
public Base () throws Exception
{
throw <>;
}
}
class Derived extends Base
{
public Derived ()
{
}
}
Now, one need to handle the exception inside Derived()
or make the constructor as,
public Derived() throws Exception
{
}
Whatever method you new
up the object of Derived
, either you enclose it in try-catch
or make that method throwing Exception
as above.
[Note: this is pseudo code]