Access characteristics of construction methods in Java inheritance

Access characteristics of constructors in Java inheritance

    subclass constructor has a default implicit “super()” call, so it must be the parent constructor called first and the subclass constructor executed later. Subclass constructs can be invoked with the super keyword to call superclass overloaded constructs. Super’s superclass constructor call must be the first statement of the subclass constructor. A subclass construct cannot call the super construct more than once.

subclasses must call the superclass constructor, don’t write gives super (); You can only have one super, and it has to be the first one.

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