JAVA

Java Training Center in Chennai

Welcome to our online introduction to Java Training Courses, located within the MIIT Institute in Chennai, India.  Java Training Courses in our institute are taught by professional web-designers and trained professors.

Our team aims to introduce the different object-oriented concepts in Java and to allow a progressive initiation to the various libraries and frameworks of the language. Input-output, collections, data access, exceptions, Java 9 news and a number of utility libraries will be presented.

About Java Course

Java is a widely used language, especially by a large number of professional programmers, which makes it an essential language currently.

Java is a modern programming language, originally developed by Sun Microsystems (now acquired by Oracle). It should not be confused with JavaScript (i.e. a scripting language used mainly on websites), because Java has nothing to do with it.

One of its greatest strengths of Java is its excellent portability: once your program is created, it will work automatically on Windows, Mac, Linux, etc.

1: Java language

• Structure of a Java program
• Basic data types
• Variables and Constants
• Types of error
• Pace of a program

2: Operator and Expression

• Operator
• Expression
• Priority and Associativity
• Data conversion
• Binary representation of numbers

3: Control Structure

• Program and Instruction
• Conditional Instruction
• Repetitive Instruction
• Connection Instruction
• Algorithm

4: Objects

• Introduction to Objects
• Create an Object
• Call a method of an Object
• The Java API
• Library and package
• Wrapper of primitive types
• Infinite precision number
• The String class
• Standard entry and exit

5: Writing Classes

• A new look at Objects
• Class, Instance variable, and Constructor
• Method and Local variable
• Method override
• Relationship between Class and Object
• Encapsulation and Immutability
• Organization of a program
• Convention and good practice

1: Java language

What is a computer program? Generally, it comes down to a sequence of 0 and 1, stored in magnetic form. As for the execution of a program, it basically results in variations of electrical voltages occurring in various components such as resistors, transistors, etc.

The purpose of this first Course is to discover the basic syntax of a high-level language, in this case the Java language. The syntax of a language is the set of

rules that must be followed to write a correct program in this language. We will see the general form of a Java program and we will also take advantage of it immediately to make good habits and know how to differentiate a “well written” Java program from another.

In particular, we will see that a program consists of different types of words that must be arranged in a certain way. There are words that must be used and that have already been defined by other programmers, and there are also some that one must choose oneself, the identifiers. We will see how to build a valid identifier.

Finally, we will focus on the basic data types, that is to say the data that we are able to handle in Java. There are, among other things, Integers and Characters. The end of the first Course deals with Variables and Constants that can store data. The data must be stored for use in various operations and calculations.

2: Operator and Expression

The second Course discusses operators and expressions that can be used to execute operations with data. Operators are used to perform operations applied to values. We will classify them in different categories: the arithmetic operators do calculations on numbers, those of comparison make it possible to compare     values ​​… Some operators have effects of edge, that is to say that in addition to making an operation, they will also modify the memory. For example, the assignment operator is used to change the value of a variable.

By performing operations on data, whether variables, constants or literals, we construct expressions. Any expression can be evaluated and has a value of a certain definite type. This course also introduces complex expressions, which are a combination of simple expressions.

Finally, the last section of this course describes the data conversion. It is indeed possible to convert data from one primitive type to another (a datum of byte type can for example be converted into data type int). We will see that there are different types of conversion possible: with or without loss of information / precision and implicit or explicit.

3: Control Structure

This Course presents the so-called control change instructions, which act on the order of execution of program instructions. They can be classified into three categories:

• Conditional statements allow choosing which portion of code will be executed or not, depending on a condition that is a Boolean In Java, there are two alternative statements: if-else and switch;
• Repetitive instructions allow you to repeat statements a number of times, as long as a certain condition, again a Boolean expression, is satisfied. In Java, there are four repetitive instructions and this course presents three of them: while, do and for. The for-each loop, for its part, is seen in another course;
• Finally, the branching instructions make it possible to jump from one specific point of the program to another place. There is first break and continue that are used with loops and also return, discussed in a further course.

The last section of this course presents what an algorithm is. This is a procedure for describing a sequence of instructions to be executed to solve a given problem. An algorithm is implemented in a given programming language in order to be actually executed by the computer.

4: Objects

This Course deals with object data, which are richer than primitive type data. Objects are the basis of object-oriented programming, the main feature of Java language. The course begins by introducing the objects in an intuitive way, making an analogy with the GSMs. The latter will help to implement the intuition of objects and the use that we will be able to make.

An object has attributes (or properties) that define its state and features described by methods for performing object operations. Attributes therefore contain information about the value of the object while methods represent operations that can be performed on the object. An object is defined by a class that we organize a set in library and package. There are many predefined objects, especially in the standard Java library that this course describes how to use and understand its documentation.

The course concludes by presenting several important classes in more detail: the wrapper classes are used to represent primitive type data using objects, the BigInteger and BigDecimal classes can be used to represent integers or decimals with arbitrary precision and finally, the String class represents strings of characters. The last part of this course describes the standard inputs and outputs that allow the program to communicate with the “outside world” by displaying information on the screen and asking the user to enter data on the keyboard.

5: Writing Classes

This fifth Course concerns the definition of new objects. The notions of class, method and object are reviewed in detail. We will start from the intuitive concept of objects with its attributes and functionalities and see step by step how to build and define a new object by defining instance variables and methods.

This course then establishes the various relationships that can be established between objects as well as the concept of overloading methods, which is widely used, such as the print and println methods of the System.out object.

Finally, this course defines two key concepts of object-oriented programming encapsulation and immutability. The last two parts present a series of conventions and rules of good practice to follow when using object-oriented programming.