India’s software development and IT industry is one of the world’s biggest and successful information technology industries.
Consider the example of the ball game described in here section. A player may be given the choice to select the colour of the balls. This colour choice will be applied to all the balls he creates during the game.
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.
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.
To understand how the super keyword is used for calling the superclass constructors, let’s add the constructors to our class hierarchy here
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.
When a class inherits from a single class, as in the case of BankAccount inheriting from Asset, it is called single-level inheritance or simply single inheritance.
In previous posts, we have learnt how to find the length of the arrays and how to clone an array. Now here we learn how to find out the class of an array.
So far we have seen the declaration and use of rectangular arrays. Java allows us to create non-rectangular arrays.
Multidimensional arrays, as the name suggests, contain more than one dimension. You can create two-dimensional, three-dimensional, and n-dimensional arrays in Java (where n is any natural number).
In my previous post, we have already learned how to declare an array, allocate the space for its elements, and how to modify and access its elements. Now we learn how to initialize a java array.
In my previous posts, we have seen how to declare an array, allocate the space for its elements, and how to modify and access its elements.