JavaSE8 all constructor methods in the base subclass default access to the non-parametric constructor method in the parent class

Os:windows7 x64
Jdk:jdk-8u131-windows-x64
Ide:eclipse Oxygen Release (4.7.0)


Code:

/* Default: All constructor methods in subclasses will access the parent class without the parameter constructor method *///parent class Father {//parameterless constructor public Father () {System.out.println ("parent class parameterless constructor");} Parameter constructor public Father (int num) {System.out.println ("parent class has a parameter constructor");}} Class Son extends Father {//Subclass no parameter constructor public son () {System.out.println ("subclass parameterless Constructor");} Subclass has a parameter constructor public son (int num) {System.out.println ("subclass has a parameter constructor");}} Class Demo {public static void main (string[] args) {son S1 = new Son (); System.out.println (); Son s2 = new Son (1); }}

Results:

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JavaSE8 all constructor methods in the base subclass default access to the non-parametric constructor method in the parent class