constructor super

Learn about constructor super, we have the largest and most updated constructor super information on alibabacloud.com

Whether the Java constructor can be inherited, and if the subclass constructor can call the superclass constructor without using super

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

Why does the constructor for a Java constructor only write this () or super () in the first line?

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

Subclass inherits Parent class, constructor features super () __ function

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

Java constructor, this, 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

Constructor in Java

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?

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

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.

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

Error:implicit Super Constructor people () is undefined for default constructor. Must define an explicit constructor

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

Write Super statement in JavaSE8 Base subclass constructor to explicitly specify the constructor of the parent class

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

Total Pages: 15 1 2 3 4 5 .... 15 Go to: Go

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.