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A rubber duck that was stuck to a seaside rock for more than a year has proved the strength of a new sticky material. The adhesive could be used in deep-sea robots and repair work, or as surgical glue ... Singularity Hub: AI Designs Underwater Super Glue That Grips Like a Barnacle super() is a special use of the super keyword where you call a parameterless parent constructor.
Understanding the Context
In general, the super keyword can be used to call overridden methods, access hidden fields or invoke a superclass's constructor. The one without super hard-codes its parent's method - thus is has restricted the behavior of its method, and subclasses cannot inject functionality in the call chain. The one with super has greater flexibility. The call chain for the methods can be intercepted and functionality injected.
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Key Insights
In fact, multiple inheritance is the only case where super() is of any use. I would not recommend using it with classes using linear inheritance, where it's just useless overhead. super() lets you avoid referring to the base class explicitly, which can be nice. But the main advantage comes with multiple inheritance, where all sorts of fun stuff can happen. Thirdly, when you call super() you do not need to specify what the super is, as that is inherent in the class definition for Child.
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Below is a fixed version of your code which should perform as you expect. A diretiva super, sem parênteses, permite ainda invocar métodos da classe que foi derivada através da seguinte syntax. super.metodo(); Isto é útil nos casos em que faças override (sobrescrevas) um método da classe pai e desejas invocar o método original.