Calling a constructor from another constructor in Java is primarily a means of providing default values for parameters to the one ... ... <看更多>

I think this speaks somewhat to Apex inheriting so much from Java. Try the same thing with a Java compiler: public class HelloDog { public ... ... <看更多>

A pattern often used in Java is that a class has one "most general" constructor, and a few "convenience constructors" which call the "most ... ... <看更多>