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Java is the word's #1 Programming language

Let’s take a look at how the language of Java is expressed in the code we write. The language itself is a collection of keywords and symbols that we put together to express how we want our code to run. Each line of code has certain rules (or grammar) about how it needs to be constructed and what is or isn’t allowed.

Remember, programming languages are abstractions, meaning that they abstract the true underpinnings of how a computer operates into things we can more easily understand. Behind the scenes it really is all ones and zeroes, but we don’t need to concern ourselves with that. We can think in these abstract terms to express our ideas and commands, and these abstractions apply across all different types of programming.

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Switch Case

Syntax : Switch Case in Java Programming It is alternative to else-if ladder. Switch Case Syntax is similar to – C/C++ Switch. Switch allows you to choose a block of statements to run from a selection of code, based on the return value of an expression. The expression used in the switch statement must return an int, a String, or an enumerated value . switch (selection) { // value case value1 : // checking value 1 statement ( s ) ; break ; // use to break switch flow if condition match case value2 : // checking value 2 statement ( s ) ; break ; . . case value_n : statement ( s ) ; break ; default : statement ( s ) ; } Different Ways of Using Switch Case : Switch Case Using Integer Case int i=3; switch (i) { case 1 : System . out . println ( "One player is playing this game." ) ; break ; case 2 : System . out . println ( "Two players are playing ...

Inheritance in Java

Inheritance in Java Inheritance is one of the feature of Object-Oriented Programming (OOPs). Inheritance allows a class to use the properties and methods of another class. In other words, the derived class inherits the states and behaviors from the base class. The derived class is also called subclass and the base class is also known as super-class . The derived class can add its own additional variables and methods. These additional variable and methods differentiates the derived class from the base class. Inheritance is a compile-time mechanism. A super-class can have any number of subclasses . But a subclass can have only one superclass. This is because Java does not support multiple inheritance. The superclass and subclass have “is-a” relationship between them. Let’s have a look at the example below. Inheritance Example Let’s consider a superclass Vehicle . Different vehicles have different features and properties howeve...

Multilevel inheritance

Multilevel inheritance We discussed a bit about Multilevel inheritance in types of inheritance in java. In this tutorial we will explain multilevel inheritance with the help of diagram and example program . It’s pretty clear with the diagram that in Multilevel inheritance there is a concept of grand parent class. If we take the example of above diagram then class C inherits class B and class B inherits class A which means B is a parent class of C and A is a parent class of B. So in this case class C is implicitly inheriting the properties and method of class A along with B that’s what is called multilevel inheritance. Example : In this example we have three classes – Car, Maruti and Maruti800. We have done a setup – class Maruti extends Car and class Maurit800 extends Maurti. With the help of this Multilevel hierarchy setup our Maurti800 class is able to use the methods of both the classes (Car and Maruti). class Car { ...

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