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INTRODUCTION TO OOPS
OOP is basically a programming style that involves the concept of objects and class.We can also say that OOP is an approach to a problem involving objects.
Use jQuery toggleClass()
The jQuery toggleCLass() method is used to add or remove one or more classes from the html selected elements. This method toggles between adding and removing one or more class name. It checks each element for the specified class names.
Class and Object in PHP
Object and class are key part of object oriented programming in PHP. Let’s understand what are classes and objects.
Class Concepts in Java: Declaring Constructors
A constructor is a special method that the runtime executes during the object-creation process. In previous parts, we saw that the following statement calls the class constructor:
Nested Classes in Java: More with Inner Classes
If an inner class is declared with a public access modifier, it can be instantiated from outside the scope of its enclosing class.
Nested Classes in Java: Classifications of Nested Classes
To create a static nested class, we use the static keyword in front of the class declaration, the same way we declare a static field or a method within the enclosing class.
The static Keyword: The static fields
We have already seen the use of the static keyword in our Java programs. In fact, the first program we encountered uses the static keyword, where it was applied to the main method.
Class Concepts in Java: Parameterized and Default Constructors (Part-5)
After the object is constructed, we may still call its setter methods (provided we defined them in the class definition) to change the value of data members to any other value.
Structure of Java Source Files and Import Statements
We have learned enough from the examples given in previous posts so far to get started writing Java programs. Now, let’s discuss the complete structure of a Java source file.
The final keyword: final classes and variables
So far we have discussed how to inherit from an existing class. However, what if we do not want anybody to inherit from our custom class? We can restrict other developers from extending our classes with the help of the final keyword.
Inheritance in Java: Calling the super Constructor
To understand how the super keyword is used for calling the superclass constructors, let’s add the constructors to our class hierarchy here
Inheritance in Java: Writing a Multi-level Inheritance Program
The application discussed in the previous post is based on the asset management classes we have studied so far. We will now look at the concepts of multilevel inheritance with the help of program code.