1. What is method chaining in java?
2. What is constructor chaining in java?
3. How can we achieve method chaining?
4. How can we achieve constructor chaining?5. Rules for method chaining?
6. Rules for constructor chaining?
7. Example of method chaining?
8. Example of constructor chaining?
9. Advantage of method chaining?
10. Advantage of constructor chaining?
Answers
1.Method Chaining is the practice of calling different methods in a single line instead of calling different methods with the same object reference separately. ... As object reference is returned by the constructor, we can use the returned object reference for calling another method as well.
2.Calling a constructor from the another constructor of same class is known as Constructor chaining. The real purpose of Constructor Chaining is that you can pass parameters through a bunch of different constructors, but only have the initialization done in a single place.
3.Method chaining happens when you want to call multiple functions using the same object and its reference. In the above example, the array method map returns an Array , which has a formidable number of methods. Because you return a reference pointing to an Array , you'll have access to all the properties of Array
4.Within same class: It can be done using this() keyword for constructors in same class.From base class: by using super() keyword to call constructor from the base class.
5.Method Chaining is the practice of calling different methods in a single line instead of calling different methods with the same object reference separately. Under this procedure, we have to write the object reference once and then call the methods by separating them with a (dot.).
6.The this() expression should always be the first line of the constructor.There should be at-least be one constructor without the this() keyword (constructor 3 in above example).Constructor chaining can be achieved in any order.
7.JavascriptFront End TechnologyObject Oriented Programming. Chaining Methods, also known as Cascading, means repeatedly calling one method after another on an object, in one continuous line of code. Let us look at an example where method chaining can help us avoid repetition.
8.Calling a constructor from the another constructor of same class is known as Constructor chaining. The real purpose of Constructor Chaining is that you can pass parameters through a bunch of different constructors, but only have the initialization done in a single place.
9.One obvious advantage of Method chaining is that it is a top-down approach with arguments placed next to the function unlike the nested calls, where tracking down respective function calls to its arguments is demanding.
10.The real purpose of Constructor Chaining is that you can pass parameters through a bunch of different constructors, but only have the initialization done in a single place. This allows you to maintain your initializations from a single location, while providing multiple constructors to the user.
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