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DATA TYPES IN JAVA PROGRAMMING – tccicomputercoaching.com

In this article we will learn about the java data types.

Variable is a memory location where we can store the data. There are three types of variables: local, instance and static. There are two types of data types in java, primitive and non-primitive.

Data Types in Java

In general every programming language is containing three categories of data types. They are

  • Fundamental or primitive data types
  • Derived data types
  • User defined data types.

datatype-in-java

Primitive data types

Primitive data types are those whose variables allows us to store only one value but they never allows us to store multiple values of same type. This is a data type whose variable can hold maximum one value at a time.

Data Type Default Value Default size
boolean false 1 bit
char ‘\u0000’ 2 byte
byte 0 1 byte
short 0 2 byte
int 0 4 byte
long 0L 8 byte
float 0.0f 4 byte
double 0.0d 8 byte

 

The Java programming language is statically-typed, which means that all variables must first be declared before they can be used. This involves stating the variable’s type and name, as you’ve already seen:

int gear = 1;

int a;  // valid

a=10;  // valid

User defined data types

User defined data types are those which are developed by programmers by making use of appropriate features of the language.

In java both derived and user defined data type combined name as reference data type.

Student  s = new  Student();

Integer Data Type:

Data Type Size Range
1 Byte 1 + 127 to -128
2 Short 2 + 32767 to -32768
3 Int 4 + x to – (x+1)
4 Long 8 + y to – (y+1)

 

Char Data Type

 
Data Type Size(Byte) Range  
Char 2 232767 to -32768  

Float Data Type

Data Type Size Range Number of decimal places
Float 4 +2147483647 to -2147483648 8
Double 8 + 9.223*1018 16

Boolean Data Type

Boolean data type takes zero bytes of main memory space because Boolean data type of java implemented by Sun Micro System with a concept of flip – flop. A flip – flop is a general purpose register which stores one bit of information (one true and zero false).

Default Values

It’s not always necessary to assign a value when a field is declared. Fields that are declared but not initialized will be set to a reasonable default by the compiler. Generally speaking, this default will be zero or null, depending on the data type. Relying on such default values, however, is generally considered bad programming style.

User Defined Data Type:

Typedef

A typedef associates a name with another data type. Here is the syntax of an IDL typedef:

typedef type identifier;

The type can be any basic IDL data type, a user-defined data structure

typedef int unit;

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Queue IN Data Structure – tccicomputercoaching.com

Data structure: It’s a way in computer science to organize data properly in such a way that we can use data efficiently.

What is Queue?

Queue is also an abstract data type or a linear data structure, in which the first element is inserted from one end called REAR (also called tail), and the deletion of existing element takes place from the other end called as FRONT (also called head). This makes queue as FIFO data structure, which means that element inserted first will also be removed first.

Like Stack, Queue is also an ordered list of elements of similar data types.

queue-in-data-structure

A queue is a particular kind of abstract data type or collection in which the entities in the collection are kept in order and the principal (or only) operations on the collection are the addition of entities to the rear terminal position, known as enqueue, and removal of entities from the front terminal position, known as dequeue. This makes the queue a First-In-First-Out (FIFO) data structure. In a FIFO data structure, the first element added to the queue will be the first one to be removed. This is equivalent to the requirement that once a new element is added, all elements that were added before have to be removed before the new element can be removed.

Real Example of Queue:

A queue at window of movie-ticket. The person who is standing first, its turn comes first, he/her comes first out.

Queue can be implemented using an Array, Stack or Linked List. The easiest way of implementing a queue is by using an Array. A bounded queue is a queue limited to a fixed number of items.

One characteristic of a queue is that it does not have a specific capacity. Regardless of how many elements are already contained, a new element can always be added. It can also be empty, at which point removing an element will be impossible until a new element has been added again.

Fixed length arrays are limited in capacity, but it is not true that items need to be copied towards the head of the queue.

Operations –

  1. createQueue Operation– This operation takes the maximum number of elements

(maxElements) the Queue can hold as an argument, creates a Queue according to it and returns a pointer to the Queue.

  1. Enqueue Operation – This Operation takes the pointer to the top of the queue Q and the item (element) to be inserted as arguments. Check for the emptiness of queue.
  2. Dequeue Operation – This Operation takes the pointer to the top of the stack S as an argument and will then dequeue an element.
  3. Front function – This function takes the pointer to the top of the queue Q as an argument and returns the front element of the queue Q.

 

Queue overflow results from trying to add an element onto a full queue and Queue underflow happens when trying to remove an element from an empty queue.

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In Ahmedabad Online Basic Computer Course

TCCI-Tririd Computer Coaching Institute has been founded to provide best computer education in various computer courses to BCA, MCA, Diploma, B.Sc. (IT), M.Sc. (IT), PGDCA and Degree-Diploma -Engineering students.

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We offer  Online Basic Computer Course which include Word, Excel, and Power Point……..

We are a leading computer training institute in bopal-Satellite-Ahmedabad. Our programme course includes theory with practical sessions, which makes our student perfect in their computer skills.

To Learn More About TCCIComputer Class

Visit us tccicomputercoaching.com

Contact us +91 9825618292

Mail to tccicoaching@gmail.com

 

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How to start coding in c? – tccicomputercoaching.com

C is a programming language originally developed for developing the UNIX operating system. It is a low-level and powerful language.

To start coding in c, first you should install Turbo C.

Install Turbo C++:

Download Turbo c++ for window.

Step 1: Locate the TC.exe file and open it. You will find it at location C:\TC\BIN\.

Step 2: File > New (as shown in above picture) and then write your C program.

All the C programs are written into text files with extension “.c” for example Welcome.c.

start-coading-in-c-at-tcci

C Compilers

When you write any program in C language then to run that program you need to compile that program using a C Compiler which converts your program into a language understandable by a computer. This is called machine language (i.e. binary format). So before proceeding, make sure you have C Compiler available at your computer. It comes along with all flavours of UNIX and Linux.

You can ask your system administrator or you can take help from anyone to identify an available C Compiler at your computer.

If you don’t have C compiler installed at your computer then you can use below given link to download a GNU C Compiler and use it.

If you are working over UNIX or Linux then you can type gcc -v or cc -v and check the result. Then you have to write coding in VI editor.

Let us see one simple c language example.

#include<stdio.h>

#include<conio.h>

int main()

{

printf (“Wel come to TCCI Computer Coaching Institute!”);

return 0;

}

Output:

Welcome to TCCI Computer Coaching Institute

Step 3: Save the program using F2 (OR file > Save), in the below screenshot I have given the name as Welcome.C. Always extension should be .c when saving programme.

Step 4: Compile the program using Alt + F9 OR Compile > Compile

Step 5: Press Ctrl + F9 to Run (or select Run > Run the C program.

Compile and Run C program using gcc compiler

We can also do the same using gcc compiler.

Following are the steps for that.

Step1: Prepare Source code Welcome.c (file saved with .c extension)

Step 2: Compile the source code.

>gccWelcome.c –o  Welcome

>

Step 3: Run the compiled program.

Once you give the above command a .exe file would have been created.

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TCCI teach Online C Programming Language to all school students , college students and any person.

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Learn In Ahmedabad Database Management System

TCCI-Tririd Computer Coaching Institute Provide Online computer courses for BCA, MCA, BSC-MSc. IT, Diploma-Degree Engineering, school-students (any standard), and any person are taught at the institute by highly qualified and experienced faculties.

Database is actually a place where related piece of information is stored and various operations can be performed on it. A DBMS is software that allows creation, definition and manipulation of database. DBMS is actually a tool used to perform any kind of operation on data in database. database management system course also provides protection and security to database. It maintains data consistency in case of multiple users. TCCI at Ahmedabad.

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We teach following topics in DBMS:

Part-I: Database

Introduction to DBMS

Requirements of Database

Disadvantages of File

Architecture

Data Models

Data schemas

Data independence

ER Diagram

Cod’s Rules

RDBMS concepts

Keys

Normalizations

Part-II: SQL

Sql introduction

DDL command

DML command

DCL command

Advanced SQL

Sql Constraints

Sql Function

Course duration: Daily/4 days/3 Days/2 Days.

Class Mode: Theory with practicals.

Lecture Timing: At student’s convenience.

To Learn More Online database management system course in Ahmedabad, Online Computer Course, Online Computer Class , TCCI

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In Ahmedabad Find Out The Java Learning Centre

Welcome to TCCI-Tririd Computer Coaching Institute. We are a Gujarat (India) based Computer coaching institute at Ahmedabad and we focus on providing best teaching to students through different learning method/media. we try our best to give best quality education without any burden at efficient cost.

online-java-coaching-tcci

We teach following topics in Java course:

  1. Basic Introduction to Java
  2. Object Oriented Programming
  3. Basic Data types and Variables
  4. Modifier Types
  5. Operators
  6. Loop controls
  7. Decision Making
  8. Arrays and String
  9. Methods
  10. Inheritance
  11. Interface
  12. Package
  13. Polymorphism
  14. Overriding
  15. Encapsulation
  16. Abstraction
  17. Exception

Course duration: Daily/4 days/3 Days/2 Days.

Class Mode: Theory with Practical.

Lecture Timing: At student’s convenience.

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Learn Online Database Management System In Ahmedabad

TCCI-Tririd Computer Coaching Institute Provide Online computer courses for BCA, MCA, BSC-MSc. IT, Diploma-Degree Engineering, school-students (any standard), and any person are taught at the institute by highly qualified and experienced faculties.

Database is actually a place where related piece of information is stored and various operations can be performed on it. A DBMS is software that allows creation, definition and manipulation of database. DBMS is actually a tool used to perform any kind of operation on data in database. Database management system course also provides protection and security to database. It maintains data consistency in case of multiple users. TCCI at Ahmedabad.

online-database-at-tcci

We teach following topics in DBMS:

Part-I: Database

Introduction to DBMS

Requirements of Database

Disadvantages of File

Architecture

Data Models

Data schemas

Data independence

ER Diagram

Cod’s Rules

RDBMS concepts

Keys

Normalizations

Part-II: SQL

Sql introduction

DDL command

DML command

DCL command

Advanced SQL

Sql Constraints

Sql Function

Course duration: Daily/4 days/3 Days/2 Days.

Class Mode: Theory with practicals.

Lecture Timing: At student’s convenience.

To Learn More Online database management system course in AhmedabadOnline Computer CourseOnline Computer Class, TCCI, Computer class in Ahmedabad

Call us @ 9825618292

Visit us @ http://www.tccicomputercoaching.com

 

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Learn Online Microsoft Office Course at TCCI Computer Coaching

TCCI-Tririd Computer Coaching Institute has been founded to provide best computer education in various computer courses to BCA, MCA, Diploma, B.Sc. (IT), M.Sc. (IT), PGDCA and Degree-Diploma -Engineering students.

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We offer Online Microsoft Office Courses which include Word, Excel, and Power Point……..

We are a leading computer training institute in bopal-Ahmedabad. Our programme course includes theory with practical sessions. Which makes our student perfect in their computer skills.

To Learn More about TCCIComputer Class

Visit us tccicomputercoaching.com

Contact us +91 9825618292

Mail to tccicoaching@gmail.com

 

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Learn Online PGDCA Course at TCCI – tccicomputercoaching.com

TCCI-Tririd Computer Coaching Institute is no.1 computer coaching institute in Bopal-Satellite-Ahmedabad. We teach various computer course to BCA, MCA, B.Sc. (IT), M.Sc. (IT), PGDCA and Diploma-Degree-Engineering students.

We aim to provide World Class Online Learning Environment in Latest Software & IT Computer Courses. We believe in Best Quality Education. Our High qualified and experienced faculty always ready to guide and motivate the students. The institute was established by Riddhi Dhandha, who is having more than 12 yrs. of teaching experience of various computer subjects. We are providing also Project Training to students.

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We offer different Online Computer courses like Degree, Diploma, MCA, BCA, PGDCA, M.A.C.I.T., etc………. trough different learning method, which include theory with practical both. Our team at TRIRID consists of experienced and highly qualified professionals. We provides training in .net technology, SQL, angular JS, telluric etc……….

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TCCI Teaches Best C Language in Ahmedabad – tccicomputercoaching.com

TCCI’s main focus is to develop logical skill of the students, so it will help students to write code their self in any language.

C programming is a general purpose and popular computer programming language which is widely used for system and application software.

C-language-tcci

We teach following topics in c:

  1. Introduction to C
  2. Basic Syntax
  3. Token
  4. Data Types and Variables
  5. Constants, Literals
  6. Storage class
  7. Operators
  8. Loop Controls
  9. For Loop
  10. While Loop
  11. Do-While Loop
  12. Decision Making
  13. Arrays
  14. String
  15. Function
  16. Pointer
  17. Inheritance
  18. Structure
  19. Union
  20. Type Casting
  21. Recursion
  22. Files
  23. Command Line Argument

Course duration: Daily/4 days/3 Days/2 Days.

Class Mode: Theory with practical’s.

Lecture Timing: At student’s convenience.

To learn more about TCCI teaches Best C language In Ahmedabad

Call us @ 9825618292

Visit us @ http://www.tccicomputercoaching.com