super constructor

Question one: Can Java constructors be inherited?The author of Java read a book said: "Java subclasses naturally inherit its superclass" non-private members.Normally Java constructors are set to public (if you do not write the constructor, Java

Recently in the internal class, but was "why anonymous internal class or local internal class use method of local variables, local variables must be final type" troubled, when looking for information on the Internet, I found that class

When initializing a subclass, the constructor of the parent class must run Because there is an implicit statement super () in the first row of the constructor of the subclass, all constructors of the subclass default to the first row of super

constructor is to create an instance of a class. This process can also be used when creating an object:Platypus P1 = new Platypus ();Instead, the method works to execute Java code.modifier, the return value differs from the namedConstructors and

Summary of constructor methods in Java today's code writing suddenly found that Java constructor also has a lot of arguments, nothing to worry about. Summary: The difference between constructor methods and instance methods: i. The main difference

Why use the this constructor and the this constructor? When a class has multiple constructors, this constructor is often used: public class SomeClass{ public SomeClass() {// TODO: Initialize some fields } public SomeClass(string temp) :

Error: Implicit super constructor People () is undefined for default constructor. Must define an explicit constructor, explicitconstructor When a subclass inherits the parent class, if the parent class does not define a constructor with parameters,

Error: Implicit super constructor XX () is undefined for default constructor. Must define an explicit constructorBecause your parent class has defined a constructor with a parameter and there is no default parameterless constructor in the parent

When a subclass inherits the parent class, if the parent class does not have a constructor that defines the parameter, the subclass can inherit the default constructor of the parent classWhen a constructed method with parameters is defined in the

Os:windows7 x64Jdk:jdk-8u131-windows-x64Ide:eclipse Oxygen Release (4.7.0)Code:/** by default, the constructor of a subclass calls the parameterless constructor of the parent class first, but the problem is, what if the parent class does not have a