ALL >> Environment >> View Article
What Is The Need Of Constructor Chaining In Java
Total Articles: 37
What is Constructor Chaining: Calling a constructor from another constructor , is known as constructor chaining.If we want to access the properties of any constructor then we have to use constructor chaining.
We know that constructor is neither static nor non static. So we can’t inherit the constructor.But using constructor chaining we can acquire the properties of another constructor.
Note: Constructor is a special type of method that always holds the class name. It is not a method but it consist of the same behaviour as a method.
Properties of Constructor :
It is same as the class name.
It does not having any return type or return statement.
It has access modifiers.
It is neither static nor nonstatic.
Java/j2ee classes bangalore
How can we achieve the constructor chaining ?
There is two ways to achieve the constructor chaining:
super() : super() (call to super) is used to call the super class constructor. That mean sub class is able to access the properties of constructor which are present in super class. For accessing the super class constructor properties inheritance is must.
If user is not defined the super() then compiler generates as the first statement in the class.But if user defined constructor is there compiler never generate the super().
this(): this()(call to this) is used to call the same class constructor. That mean we can achieve the properties of constructor which are present in the same class. For using this() constructor overloading is necessary. Without constructor overloading we can’t get the properties of same class.
Java course in bangalore
Note: super() and this() should be the first statement. Because of that both can’t be present in the same class.
What is Constructor Overloading ?
In a single class multiple constructor exist with the same name but differs in number of parameters , type of parameters and position of parameters.
What is need of constructor chaining ?
Access the properties: Constructor chaining is used to access the properties of constructor in the same class or in another class.
Code optimization :Using constructor chaining we achieve code optimization ,means lines of code get reduced.
Java training center bangalore
Maintenance easy : Using constructor chaining maintenance easy because if we keep the common functionality in super class constructor.So we need to change only in super class constructor.
Memory will get reduced : If same code will repeat at multiple times then more memory will used. to avoid this we use constructor chaining, we access the same code.Then less memory used.
Difference between constructor and method :
 Constructor always holds the class name, but method name should be different ,method name should not be same as the class name.
Constructor is neither static nor non static but method is always static or non static.
best core java training in bangalore
Constructor is not having return type or return statement. Method is always having return type. Method always returns a value. If we don’t want any value to be return then we use void return type.
Difference between super() and this()
1) super() is used to call super class constructor, this() is used to call same class constructor.
2) For super() inheritance is necessary because for achieving the super class constructor we use the concept of sub and super class.
For this() constructor overloading is necessary.
3)If userdefined super() is not there compiler generate super().
But this() is not generate by the compiler, we have to explicitly define the this().
Advance java training in bangalore
This is the short description about the constructor chaining to get the good knowledge on java for development purpose and to work on the live project join Infocampus Software Training institute.
Author : Infocampus provides java/j2ee classes bangalore with 100% placement assistance.
Complete practical classes are available on java course. 4 days free demo classes provided for java training. Training is given by the 10+ years experienced trainers.
Learn oops concept ,thread ,packages,spring ,hibernate etc in best core java training institute.
Mock test and mock interviews are conducted every weekend on Core and Advance java.
After every topic assignment is provided for the preparation on advance java training.
To get the free demo classes call at 9738001024 or visit at :
Environment Articles1. A Perfect Date In The Clouds
Author: SkyWaltz Balloon Safari
2. Kenya To Produce Fertilizer From Hyacinth
Author: Elena Forbes
3. Call Centers In India: A Step Towards A New Era
4. How Solar Energy Works And How You Could Take Advantage From It?
Author: Solar Etribe
5. Battle Of The Solar Manufacturers
6. An Intro To The Solar Hot Water Heater
Author: Ross Barkely
7. Say Hello To The Highly-efficient Solar On Grid Systems
Author: Solar on Grid Systems
8. Epa To Consider Controlling Polyfluoroalkyl Substances
Author: Environmental Resource Center
9. Solar Products Manufacturers In India
Author: Solar E tribe
10. The Future Of Solar Energy In The India What To Expect
Author: SOLAR eTRIBE
11. Solar Installation Training In India. How To Become One?
Author: SOLAR eTRIBE
12. Looking For Solar Leads? Find A Lead
13. How To Choose The Right Solar Energy Leads
Author: Solar e tribe
14. How Can India Become Globally Competitive In Solar Module Manufacturing
15. FundaciÓn Bioplanet - Lucha Por El Cambio ClimÁtico
Author: FUNDACIÓN BIOPLANET