Java OPPS Concepts
Java Data Type Casting Type Conversion Summary: By the end of this tutorial "Java Data Type Casting Type Conversion", you will be comfortable with converting one data type to another either implicitly or explicitly. Java supports two types of castings – primitive data type casting and reference type casting. Reference type casting is nothing but …
OOPS concepts Tutorial Summary: By the end of this tutorial "OOPS concepts Tutorial", you will understand the meaning of OOPS concepts. Three basic concepts of OOPS Abstraction Encapsulation Polymorphism 1. Abstraction Abstraction means using the equipment (or code) without knowing the details of working. For example, you are using your mobile phone without knowing how …
Data Binding Data Hiding Encapsulation Summary: This tutorial "Data Binding Data Hiding Encapsulation "is targeted as a good starting point for those who are new to OOPS concepts. Even if you are familiar with, start reading and you may find something useful that you have not known earlier. Or you can enjoy the approach I …
Java Example Compilation Execution Summary: By the end of this tutorial, you will understand how a "Java Example Compilation Execution" is done. What is a class in Java? Two concepts existed in the minds of Java designers from the day one of development – to make the language simple and easy to practice and platform-independent. …
Java Local Instance Variables Summary: Explained in Java syntax in a simple way of using "Java Local Instance Variables" for a beginner. Variables – Properties A program stores values in variables. As the name indicates, a variable value can be varied by the programmer at any time. An object uses variables to set its properties. …
Using Variables from Methods Summary : In this Java tutorial Using Variables from Methods , you understand how to call instance and local variables from methods. Observe keenly the difference of using variables from methods. An object is required to call instance variables but not local. You know, C/C++ global variables in Java are called …
Java static Variable Method Summary: By the end of this tutorial "Java static Variable Method", you will comfortable to write programs with static variables and methods. After discussing the usage of "this" keyword, let us move to another keyword "static". The "static" keyword is used as an access modifier. Java has access specifiers and access …
Java Methods Method Overloading Using Methods The procedures and functions are known as methods in Java. The methods scope is for the whole class. Now here, you can make a small difference. A function in C-lang can be called without object but a method is to be called with an object. The first line of …
Unassigned Local and Instance Variables Summary: In this "Java unassigned variables" tutorial, you will learn Java nature of unassigned variables which quiet contract to C/C++. One of the features of Java is "Java does not support garbage values". If a variable is used without a value assigned, it is either compilation error or takes a …
Composition has-a Relationship One of the goals of OOP languages is reusability. Java gives good importance for reusability. A method in Java can be called in two ways. With the objects of the same class (through composition) With the objects of other classes (through inheritance) Here we discuss the composition. class Bird { public void …
Reference Variables Anonymous objects Summary: By the end of this tutorial "Reference Variables Anonymous objects", you will be comfortable in creation of Java objects, reference variables and anonymous objects. Java includes two types of variables – primitive variables and reference variables. A primitive type refers a primitive data type and reference type refers a class. …
Difference Encapsulation Abstraction Summary: It is very confusing concept, as one depends on other, for a Java beginner to understand. Explained in simple terms in this tutorial "Difference Encapsulation Abstraction". How to explain the difference between Encapsulation and Abstraction before an Interviewer? Encapsulation is an OOPS concept. As everyone says, Encapsulation is binding the data …
