#java interview questions c tutorials in hindi

[smartprogramming]

Categories Of Prgramming Languages :

1. COMPUTER LANGUAGE : 1.1 Programming Language : c, c++, java, c# 1.2 Query Language : SQL (for relational databases), NoSQL (for non-relational databases), OQL (Object Query Language) 1.3 Mark-Up Languages : HTML, DHTML, XML, XHTML 1.4 Scripting Language :  1.4.1 Client Side Scripting Language : JavaScript, VBScript  1.4.2 Server Side Scripting Language : PHP, Servlets, JSP

2. TECHNOLOGIES : CSS, JQuery, AJAX

3. FRAMEWORKS : 3.1 Java Frameworks : Struts, Spring, Hibernate, JSF 3.2 PHP Frameworks : CakePHP, CodeIgnitor, Drupal, Joomla, Zend Framework 3.3 JavaScript Frameworks : Angular JS, Node JS, React JS

4. OPERATING SYSTEMS : 4.1 Mobile OS : Android, IOS, Blackberry, Symbian 4.2 DESKTOP OS : Linux, Windows, MacOS

[deathcode-yt]

Java Tutorial for Beginners 👌 || Java One Shot 😍 || All JAVA Basic Concepts in Hindi || Death Code

Java Tutorial for Beginners 👌 || Java One Shot 😍 || All JAVA Basic Concepts in Hindi || Death Code In This Video We are Going to Complete all Basic Concepts of JAVA Programming Language in Hindi with easy tricks. #javaprogramming #javaforbeginners #deathcodeyt Telegram Channel Link: https://t.me/DeathCodeYT Another Link: https://t.me/+_k7nqMRJ-L84YmY9 ►JAVA Full Course for Absolute Beginners in Hindi : https://youtube.com/playlist?list=PLVwbZ9sSg3wPa_Uij8O0wBPMksOjfFI_l You can follow us at: ►Facebook: https://www.facebook.com/DeathCodeYT/ ► Twitter: https://twitter.com/DeathCodeYT ► Instagram: https://www.instagram.com/deathcodeyt/ ► Reddit: https://www.reddit.com/user/DeathCodeYT ► Pinterest: https://pinterest.com/DeathCodeYT ► Our blog:  https://deathcodeyt.blogspot.com/ ► Youtube: https://youtube.com/@deathcodeyt Keywords: DEATHCODE deathcode death code Java 8 Course Learn Java From Basic To Advance Java Java Video Tutorial Jvm Video Tutorial Hindi Java Tutorial In Hindi Java Virtual Machine Java Course Java Full Course Java Ide Jre jvm jdk Java Edureka C++ Coding C++ Placement Course Java Programming Learn Java Programming For Beginners Java Projects Great Learning Learn Coding Hindi Jvm Java In Hindi Java Training Java Programming Tutorial Java (Programming Language) Edureka Java Runtime Environment Java Language Object Oriented Programming Java Java By Neso Introduction To Java C++ Full Course Java 8 Simplilearn Java Data Types Java Programming Syllabus Simplilearn Java Java Introduced By? Jdk Java Android Development Differences Between Jvm Vs Jre Vs Jdk Java Tutorial Java Tutorial For Beginners Complete Java Course Java Certification Java Video Lecture Hindi Java Programming Tutorial Hindi Difference Between Jdk Jdk Vs Jre Vs Jvm Java In 5 Minutes Understanding Jdk Jre And Jvm Java Introduction What Is Java Java Basics Java Programming Language Java Full Course In Hindi Java Coding Jvm Kya Hota Hai Java Programming Full Course Java Online Training Java Placement Course C++ Hindi Lecture On Jvm Why Java Introduced Learn Java By Learn Coding Difference Between Jdk Jre And Jvm Java 8 Tutorial Difference Learn Java Programming Jre And Jvm Great Lakes Android App Development Java In One Video Java Virtual Machine Hindi Lecture Jdk Jre And Jvm Oop Java Lectures Java Interview Questions Java Tutorial Series What Is Jvm Hindi Introduction To Java For Beginners Java Certification Training Java Beginner Tutorial Object Oriented Programming Jdk Jre And Jvm In Java Neso Academy Java Programming Java Projects For Beginners Java Tutorial Hindi Learn Java How To Code

[fuckyeamia-blog]

Internet marketing terms

If you use this image in any way, shape or form, please give credit to: joshmacdonald.net

Tags: search engine optimization tips companies definition tools for dummies jobs basics techniques services pricing (seo) google training salary wordpress software strategies course 2015 articles an hour a day agency austin atlanta all-in-one analyst analysis amazon audit and social media analytics marketing pdf algorithms advantages advertising job description pay-per-click books best practices blog benefits boston business blogger banner backlinks bible by black hat beginners tutorial ppt cost classes certification career consultant checker company reviews conference coursera cincinnati crash online checklist cheat sheet case studies code new york degree dallas diy defined denver domain name dubai delhi do it yourself disadvantages diagram doc drupal duties duplicate content database driven websites download examples etsy experts education explained ebook ethics expert free earn money en español effectiveness executive elements essay francais ebay edmonton ecommerce small firm facts blogs website lawyers non profits youtube musicians local postings godaddy goals greenville sc adwords generator webmaster goa getting started 2010 (2010) sites guaranteed results how to html help works hubspot history html5 headlines higher hong kong hyderabad h1 guide much does hotels hawaii hamilton harold davis images icon in spanish inc is india infographic internship importance industry the process of quizlet interview questions issues iis investopedia sharepoint 2013 worth sentence journal javascript joomla work from home openings chennai pune mumbai nagpur canada 3 bangalore kansas city keyword tool knowledge research keywords key points kenya kolkata kristopher b jones kpi factors kuwait kerala kitchener keys kaskus los angeles linkedin learning lessons london logo là gì lynda list law limitations lecture notes link building latest trends las vegas links land long island legal monmouth county nj manager meta tags miami methods texas moz metrics metadata music muse strategy minnesota make meaning urdu hindi news note managers orleans nyc nedir newsletter ny nz natural .net noida north carolina zealand jersey nh nottingham orlando on resume overview ottawa page objectives or seo opencart flipkart off organic program plan packages plugin proposal photography pay per click price principles presentation pros cons podcast purpose pagerank quotes queries quora quiz qualifications questionnaire answers quotation quick quebec qatar quicksprout format freshers report ranking reddit raleigh real estate richmond va rules roi papers promotion requirements resources rates registration recruiting rails starter specialist squarespace san diego seattle sacramento statistics school scams shopify secrets steps test terms tactics tricks tampa toolkit udemy url using genetic algorithm uae updates php uses usa upwork redirects utah university user usage java video vancouver wa vs tutorials victoria bc vendors virginia vector visual value vietnam wiki wix words weebly writing white paper web design what why important site word w3schools with example sitemap xml xara webplus x6 x5 yahoo your blueprint effective internet yellow pages yandex bing you gotta use zen cart zenfolio zazzle search-engine-optimization-starter-guide-zh-cn.pdf search-engine-optimization-starter-guide-zh-cn zh tw 2012 2014 photographers handmade jewelry blogspot bangla basic seo-tips-search-engine-optimization.blogspot copywriting matt cutts dan trik easy facebook top 10 pinterest image improve 101 simple ten uk nigeria philippines melbourne sri lanka south africa pakistan agreement ahmedabad australia baltimore chicago california charlotte nc consulting columbus ohio financial houston michigan jaipur singapore johannesburg maryland provider philadelphia ranked rated toronto us that english define wikipedia programs ca submitter submit adalah all one 2nd edition abstract asp.net book 7 dreamweaver documentation dynamic directory employment explanation forum 5th freelance features peter kent indianapolis information introduction ieee c# jacksonville profile optimization/ksp literature review louisville landing malaysia montreal made market size minneapolis magento milwaukee manchester nashville odesk answer objective project poisoning reseller rochester robots.txt seminar versus vadodara validator webinar westchester workshop videos adobe bruce clay susan esparza banks baidu bands b2b churches chiropractors contractors wordpress.com colleges 4th dentists doctors designers automotive dealers flash advisors firms accounting hire hospitals iweb 2.5 my mobile newspapers 3rd second press releases physicians restaurants realtors retail travel twitter tumblr traffic universities writers saudi arabia bhopal bhubaneswar chandigarh coimbatore cochin ncr entry level gurgaon indore karachi leeds lahore part time related sales writer 1 utilization method advanced practiced organizations study four applying increase visibility various blackhat bad 2.0 two ethical used good semantic (ieee 2013) seven illegal lucene learn types 2011 are website’s service affordable about bangladesh surat average comparison costs take monthly month plans winnipeg means which practice mindset apa itu engines video2brain – (6.45 mb pdf) danny dover campaign florida google’s’ document optimize jumpstart

Posted by JoshMacDonald on 2016-01-17 17:43:22

Tagged: , internet , marketing , business , blogging , seo , search , engine , optimization

The post Internet marketing terms appeared first on Good Info.

[hari-0406-blog]

Learn How to verify if a string contains only integers in Java, Java Tutorials in Hindi, String Program in Java How to verify if a String contains only integers in #ENGLISH https://youtu.be/Bz4BGg-WYEA In this episode, the charismatic technical leader, Manjunath Aradhya Sir has explained How to verify if a string contains only integers in Java. This video lecture is presented by one of the fastest-growing technical training institutes in India i.e ABC for technology training. This episode is delivered by the visionary Founder & dynamic CEO of ABC for technology training Mr. Manjunath Aradhya who has revolutionized the technical training domain using his 20+ years of teaching experience. This is one of the most commonly asked interviews questions for freshers for software developer profile. The role of a software engineer is one of the respected jobs of the century. Every day, companies are looking out for more & more skilled software engineers & surveys show that there is only 4 to 5 percent of engineering graduates are qualified & skilled candidates to fill the roles. This technical interview series of videos is recommended for all engineering graduates who aspire to become a software developer, CS, IS, EEE, ECE, TC engineering graduates, BCA, MCA, & MTech, BSC fresh graduates & all the programming faculties across universities. About the trainer: Mr. Manjunath Aradhya, a technocrat by profession, a teacher by choice & an educationist by passion. Under his able leadership, ABC for Technology Training which is a National brand enabling the creation of thousands of careers annually in the IT Sector. He has extensive experience working as a Business associate with Wipro Technologies. He has also served as a Corporate trainer to many other leading software firms. He has been providing technical assistance to placement cell of various Engineering colleges. He has also authored numerous hot selling engineering & other textbooks which are published by Pearson Education, an internationally acclaimed publication house headquartered in London. Other renowned international publishers such as Cengage Learning headquartered in Boston, United States, have published books authored by him. C Programming & Data Structures book published by Cengage India Private Limited authored by a profound scholar Mr. Manjunath Aradhya is the prescribed book in Dr. Hari Singh Gour University which is the Central University & the oldest university in the state of Madhya Pradesh (MP), India To learn more about Technology, subscribe to our YouTube channel: http://bit.ly/2jREy4a

[hari-0406-blog]

Learn How to convert lowercase String to uppercase in Java HINDI, Technical interview questions, Java tutorial in HINDI. 

How to convert lowercase Strings to uppercase in Java [ENGLISH] https://youtu.be/lq5dfplnibE    

In this episode, the charismatic technical leader, Manjunath Aradhya Sir has explained How to convert lowercase String to uppercase in Java &  how it works programmatically. This video lecture is presented by one of the fastest-growing technical training institutes in India i.e ABC for technology training. This episode is delivered by the visionary Founder and dynamic CEO of ABC for technology training Mr. Manjunath Aradhya who has revolutionized the technical training domain using his 20+ years of teaching experience. This is one of the most commonly asked interviews questions for freshers for software developer profile. The role of a software engineer is one of the respected jobs of the century. Every day, companies are looking out for more and more skilled software engineers and surveys show that there is only 4 to 5 percent of engineering graduates are qualified and skilled candidates to fill the roles. About the trainer: Mr. Manjunath Aradhya, a technocrat by profession, a teacher by choice and an educationist by passion. Under his able leadership, ABC for Technology Training which is a National brand enabling the creation of thousands of careers annually in the IT Sector. He has extensive experience working as a Business associate with Wipro Technologies. He has also served as a corporate trainer to many other leading software firms. He has been providing technical assistance to placement cell of various Engineering colleges. He has also authored numerous hot selling engineering and other textbooks which are published by Pearson Education, an internationally acclaimed publication house headquartered in London. Other renowned international publishers such as Cengage Learning headquartered in Boston, United States, have published books authored by him. C Programming and Data Structures book published by Cengage India Private Limited authored by a profound scholar Mr. Manjunath Aradhya is the prescribed book in Dr. Hari Singh Gour University which is the Central University and the oldest university in the state of Madhya Pradesh (MP), India

To learn more about Technology, subscribe to our YouTube channel: http://bit.ly/2jREy4a

[hari-0406-blog]

Palindrome in Java Hindi, Write a java program to check string is a palindrome or not, Java Tutorial for freshers in Hindi, Program To Check for Palindrome Number in Java, Palindrome String in Java, How to check if a string is a palindrome or not. Palindrome Program in Java [ENGLISH] :  https://youtu.be/z8t7azRQdlQ 

In this episode, the charismatic technical leader, Manjunath Aradhya Sir has explained what is Palindrome in Java and how it works programmatically. This video lecture is presented by one of the fastest-growing technical training institutes in India i.e ABC for technology training. This episode is delivered by the visionary Founder and dynamic CEO of ABC for technology training Mr. Manjunath Aradhya who has revolutionized the technical training domain using his 20+ years of teaching experience.

This is one of the most commonly asked interviews questions for freshers for software developer profile. The role of a software engineer is one of the respected jobs of the century. Every day, companies are looking out for more and more skilled software engineers and surveys show that there is only 4 to 5 percent of engineering graduates are qualified and skilled candidates to fill the roles.

This technical interview series of videos is recommended for all engineering graduates who aspire to become a software developer, CS, IS, EEE, ECE, TC engineering graduates, BCA, MCA, and MTech fresh graduates and all the programming faculties across universities.

About the trainer: Mr. Manjunath Aradhya, a technocrat by profession, a teacher by choice and an educationist by passion. Under his able leadership, ABC for Technology Training which is a National brand enabling the creation of thousands of careers annually in the IT Sector. He has extensive experience working as a Business associate with Wipro Technologies. He has also served as a Corporate trainer to many other leading software firms. He has been providing technical assistance to placement cell of various Engineering colleges. He has also authored numerous hot selling engineering and other textbooks which are published by Pearson Education, an internationally acclaimed publication house headquartered in London. Other renowned international publishers such as Cengage Learning headquartered in Boston, United States, have published books authored by him. C Programming and Data Structures book published by Cengage India Private Limited authored by a profound scholar Mr. Manjunath Aradhya is the prescribed book in Dr. Hari Singh Gour University which is the Central University and the oldest university in the state of Madhya Pradesh (MP), India.

To learn more about Hadoop, subscribe to our YouTube channel: http://bit.ly/2jREy4a

[hari-0406-blog]

JAVA TRAINING:- https://course.abctechtraining.com/ 

This Java Tutorial for Beginners in HINDI will help you learn java concepts. Java Tutorials in HINDI Strings in Java, interview questions & answers java, string manipulation in Java, Video Tutorials. How to COMPUTE LENGTH of String WITHOUT using any INBUILT FUNCTION | How to COMPUTE LENGTH of String WITH using  INBUILT FUNCTION | Strings in Java |Strings in C | Technical interview questions for freshers | Strings In this episode the charismatic technical leader, Manjunath Aradhya Sir has explained how to compute the length of String without using any INBUILT FUNCTION. This video lecture is presented by one of the fastest growing technical training institutes in India i.e ABC for technology training. This episode is delivered by the visionary Founder and dynamic CEO of ABC for technology training Mr. Manjunath Aradhya who has revolutionized the technical training domain using his 20+ years of teaching experience. This is one of the most commonly asked interviews questions for freshers for software developer profile. The role of a software engineer is one of the respected jobs of the century. Every day, companies are looking out for more and more skilled software engineers and surveys show that there is only 4 to 5 percent of engineering graduates are qualified and skilled candidates to fill the roles. This technical interview series of videos is recommended for all engineering graduates who aspire to become a software developer, CS, IS, EEE, ECE, TC engineering graduates, BCA, MCA, and MTech fresh graduates and all the programming faculties across universities. About the trainer: Mr. Manjunath Aradhya, a technocrat by profession, teacher by choice and an educationist by passion. Under his able leadership, ABC for Technology Training which is a National brand enabling the creation of thousands of careers annually in the IT Sector. He has an extensive experience working as a Business associate with Wipro Technologies. He has also served as a Corporate trainer to many other leading software firms. He has been providing technical assistance to placement cell of various Engineering colleges. He has also authored numerous hot selling engineering and other textbooks which are published by Pearson Education, an internationally acclaimed publication house headquartered in London. Other renowned international publishers such as Cengage Learning headquartered in Boston, United States, have published books authored by him. C Programming and Data Structures book published by Cengage India Private Limited authored by a profound scholar Mr. Manjunath Aradhya is the prescribed book in Dr. Hari Singh Gour University which is the Central University and the oldest university in the state of Madhya Pradesh (MP), India To learn more about Technology,

subscribe to our YouTube channel: http://bit.ly/2jREy4a

[smartprogramming]

FEATURES OF JAVA : 1.  Platform Independent  :-  The concept of  Write-once-run-anywhere  (known as the Platform independent) is one of the important key feature of java language that makes java as the most powerful language. The programs written on one platform can run on any platform provided the platform must have its own JVM. 2.  Portable  :-  The feature Write-once-run-anywhere makes the java language portable provided that the system must have interpreter for the JVM. Java also have the standard data size irrespective of operating system or the processor. These features makes the java as a portable language. 3.  Secure  :-  This is important feature of java. Java is very much secure as compared to any other language. Some of the points why java is secured is JVM, Security Manager, No Pointers, Access Modifiers, Exception Handling, Own Memory Management. 4.  Object Oriented  :-  Basic concepts of OOP's are OBJECT, CLASS, INHERITANCE, PLOYMORPHISM, ABSTRACTION, INCAPSULATION, DYNAMIC BINDING. Java follows all these basic concepts of OOP's. As the languages like Objective C, C++ fulfills the above four characteristics yet they are not fully object oriented languages because they are structured as well as object oriented languages. But in case of java, it is a fully Object Oriented language because object is at the outer most level of data structure in java. No stand alone methods, constants, and variables are there in java. Everything in java is object even the primitive data types can also be converted into object by using the wrapper class. 5.  Robust  :-  Dictionary meaning of Robust is Powerfull or Strong. The feature of java like Memory Allocation & Automatic Garbage Collection makes java Robust. The Java Source Code will only be compiled when it is Error Free. Also powerful Exception Handling and Type Checking mechanism makes java strong and guides you how to deal with perticular type of error. 6.  Multi-Threading  :-  Java is a Multithreaded programming language. Multithreading means a single program having different threads executing independently at the same time. Multiple threads execute instructions according to the program code in a process or a program. Multithreading works the similar way as multiple processes run on one computer. In multithreaded programs not even a single thread disturbs the execution of other thread. Threads are obtained from the pool of available ready to run threads and they run on the system CPUs. 7.  Simple, As Some features of C & C++ Eliminated  :-  Some features of C & C++ like  Memory Pointer, Preprocessor, No Array Index Limit Checking, Operator Overloading, No Automatic Garbage Collection  is removed from Java. This makes java more simple & less confusing. ---------------------------- USE OF JAVA : 1. Android Apps : Java has a rich use in Android Applications. Open your Android phone and any app, they are actually written in Java programming language, with Google's Android API, which is similar to JDK (DVM in android). Couple of years back Android has provided much needed boost and today many Java programmer are Android App developer. 2. Financial Services Industries : Java is very big in Financial Services which demands more security. API's of Data Processing & Payment Gateways are created in java. It is mostly used to write server side application, mostly without any front end, which receives data form one server (upstream), process it and sends it other process (downstream). 3. Java Web Applications : Java is also big on E-commerce and web application space. Java frameworks i.e. Spring MVC, Struts 2.0 and other frameworks are used for this web applications. Many of government, healthcare, insurance, education, defense and several other department have their web application built in Java. 4. Software Tools : Many useful software and development tools are written and developed in Java e.g. Netbans, Eclipse and InetelliJ IDE. They are also most used desktop applications for development of java and other languages. 5. Big Data Technologies : Many social networking websites like facebook twitter etc and e-commerse websites generates a lot of data day to day. So to manage this huge amount of data, Hadoop and other big data technologies are developed using java only. So Java plays an important role for big data technologies. 6. Scientific Applications : As Java is more safe, portable, maintainable and comes with better high-level concurrency tools than C++ or any other language therefore Java is often a default choice for scientific applications, including natural language processing. 7. J2ME Apps : There was time when Nokia and Samsung handsets had a large market which uses J2ME. At that time almost all games, applications, which is available in Android are written using MIDP and CLDC, part of J2ME platform. 8. Embedded Systems : Java is also used in embedded systems. Computers, Printers, Routers, ATM’s, Home Security Systems etc. all uses java a lot.

[smartprogramming]

WHAT IS JAVA : Java is : 1. Programming Language : Java is a High Level Programming Language. It derives much of its syntax from C and C++, but it has fewer low-level facilities than either of them. 2. Platform : Java is a Platform because it has its own runtime environment that is JVM (Java Virtual Machine). JVM provides a platform which accepts the byte code and executes on the machine. ---------------------------------------------------------------------------------------------------------------- HISTORY OF JAVA is as follows:- 1991 :-   In 1991, Java was conceived by James Gosling, Patrick Naughton, Chris Warth, Ed Frank & Mike Sheridan at  Sun Microsystem. Its first name was "OAK".   1995 :-   Between 1991 to 1995 many more people contributed to the design & evolution of java. Bill Joy, Arthur van Hoff, Jonathan Payne, Frank Yellin & Tim Lindholm were main contributors. JDK Alpha and Beta  version was released. 1996 :-   In January 23, 1996 JDK 1.0  version was released. It was first stable release of java 1997 :-   In February 19,, 1997 JDK 1.1  version was released. 1998 :-   In December 8, 1998 JDK 1.2  version was released. 2000 :-   In May 8, 2000 JDK 1.3  version was released. 2002 :-   In February 6, 2002 JDK 1.4  version was released. 2004 :-   In September 30, 2004 JDK 5.0  version was released. 2006 :-   December 11, 2006 Java SE 6  version was released. 2010 :-   The acquisition of Sun Microsystems by Oracle Corporation was completed on January 27, 2010 2011 :-   In July 28, 2011 Java SE 7  version was released. 2014 :-   In March 18, 2014 Java SE 8  version was released. 2017 :-   In September 21, 2017 Java SE 9  version was released.

[smartprogramming]

Description : In programming languages, identifiers are used for identification purpose. In Java an identifier is any name, it can be variable name, method name, class name, interface name or package name. ---------------------------------------------------------------------------------------------------------------------------- Rules for identifiers : 1. Spaces cannot be used. eg. int emp id=101; //wrong 2. Only underscore and $ sign can be used, not any other symbol in identifier name. eg. int emp_id=101; //correct     int $emp_id=101; //correct     int emp+id=101; //wrong 3. Reserved words cannot be used. eg. int public=10; //wrong     int false=10; //wrong 4. Integer value cannot be used at first position but can be used after first character. eg. int 1id=101; //wrong     int id1=101; //correct     int i1d=101; //correct     int _1id=101; //correct ---------------------------------------------------------------------------------------------------------------------------- Naming Conventions : (let us assume three words : my, java, demo; then) VARIABLE NAMES : my ....OR.... my_java ....OR.... my_java_demo METHODS NAME : my() ....OR.... myJava() ....OR.... myJavaDemo() CLASS or INTERFACE NAME : My ....OR.... MyJava ....OR.... MyJavaDemo

[smartprogramming]

Operators : Operators are the special symbols which perform any operation on one or more operands We can divide all the Java operators into the following groups :- 1. Arithmetic Operators  Arithmetic operators are used in mathematical expressions in the same way that they are used in algebra.   2. Relational Operators  A relational operator compares two values and determines the relationship between them. For example, != returns true if its two operands are unequal. Relational operators are used to test whether two values are equal, whether one value is greater than another, and so forth.   3. Bitwise Operators Java defines several bitwise operators, which can be applied to the integer types, long, int, short, char, and byte. Binary AND Operator copies a bit to the result if it exists in both operands. Binary OR Operator copies a bit if it exists in either operand.   4. Logical Operators  A logical operator (sometimes called a “Boolean operator”) in Java programming is an operator that returns a Boolean result that's based on the Boolean result of one or two other expressions.   5. Assignment Operators  One of the most common operators that you'll encounter is the simple assignment operator " = ". You saw this operator in the Bicycle class; it assigns the value on its right to the operand on its left: ... This operator can also be used on objects to assign object references, as discussed in Creating Objects. 6. Misc Operators  There are few other operators supported by Java Language.  eg is Conditional Operator ( ? : ) Conditional operator is also known as the ternary operator. This operator consists of three operands and is used to evaluate Boolean expressions. The goal of the operator is to decide, which value should be assigned to the variable. The operator is written as − ----------------------------------------------------------------------------------------------------------------------------------- Literals : The values provided to the variable is known as literal. Types of literals : String literals, character literals, float literal, boolean literal, integer literal, null literal ----------------------------------------------------------------------------------------------------------------------------------- Keywords : Keywords are the predefined words having any specific meaning. In java there are total 50 keywords (48 in use and 2 not used)

[smartprogramming]

What is variable ?

1. Variable is a name of memory location where data is stored. 2. The value of variable can vary, means value can be changed. There are three types of variables : 1. Local Variables : 1.1 DECLARED : inside methods, constructors or blocks. 1.2 SCOPE : within the methods, constructors or blocks but not outside of them. 1.3 MEMORY ALLOCATION : when method, constructor or block is invoked variable is allocated; when exits, variable gets destroyed. 1.4 STORED MEMORY : stack memory 1.5 DEFAULT VALUES : doesnt have any default value, so it should be assigned before use. 1.6 ACCESS MODIFIERS : public, private or protected access specifier cannot be used. 2. Instance Variable : 2.1 DECLARED : in a class but outside methods, constructors or blocks. 2.2 SCOPE : inside the class, within all methods, constructors or blocks. 2.3 MEMORY ALLOCATION : when object is created, variable allocated memory; when object destroyed, memory releases. 2.4 STORED MEMORY : heap memory 2.5 DEFAULT VALUES : have default values eg. int has 0 value, boolean false, String null etc. 2.6 ACCESS MODIFIERS : any access modifiers can be used. 2.7 HOW TO ACCESS : a) can be accessed directly by calling the variable name inside the class.       b) in static methods they should be called using the fully qualified name, ie objectRefName.variable_name. 3. static variable : 3.1 DECLARED : with static keyword in a class but outside methods, constructors or blocks. 3.2 SCOPE : similar to instance variable ie inside the class, within all methods, constructors or blocks including static part 3.3 MEMORY ALLOCATION : when we run program and .class file is loaded, variable allocated; when class file unload, variable gets destroyed. 3.4 STORED MEMORY : non-heap memory or static memory 3.5 DEFAULT VALUES : have default values eg. int has 0 value, boolean false, String null etc. 3.6 ACCESS MODIFIERS : any access modifiers can be used. 3.7 HOW TO ACCESS : a) directly       b) by using class name       b) by using object reference name

[smartprogramming]

What is variable ? 1. Variable is a name of memory location where data is stored. 2. The value of variable can vary, means value can be changed.

There are three types of variables : 1. Local Variables : 1.1 DECLARED : inside methods, constructors or blocks. 1.2 SCOPE : within the methods, constructors or blocks but not outside of them. 1.3 MEMORY ALLOCATION : when method, constructor or block is invoked variable is allocated; when exits, variable gets destroyed. 1.4 STORED MEMORY : stack memory 1.5 DEFAULT VALUES : doesnt have any default value, so it should be assigned before use. 1.6 ACCESS MODIFIERS : public, private or protected access specifier cannot be used.

2. Instance Variable : 2.1 DECLARED : in a class but outside methods, constructors or blocks. 2.2 SCOPE : inside the class, within all methods, constructors or blocks. 2.3 MEMORY ALLOCATION : when object is created, variable allocated memory; when object destroyed, memory releases. 2.4 STORED MEMORY : heap memory 2.5 DEFAULT VALUES : have default values eg. int has 0 value, boolean false, String null etc. 2.6 ACCESS MODIFIERS : any access modifiers can be used. 2.7 HOW TO ACCESS : a) can be accessed directly by calling the variable name inside the class.       b) in static methods they should be called using the fully qualified name, ie objectRefName.variable_name.

3. static variable : 3.1 DECLARED : with static keyword in a class but outside methods, constructors or blocks. 3.2 SCOPE : similar to instance variable ie inside the class, within all methods, constructors or blocks including static part 3.3 MEMORY ALLOCATION : when we run program and .class file is loaded, variable allocated; when class file unload, variable gets destroyed. 3.4 STORED MEMORY : non-heap memory or static memory 3.5 DEFAULT VALUES : have default values eg. int has 0 value, boolean false, String null etc. 3.6 ACCESS MODIFIERS : any access modifiers can be used. 3.7 HOW TO ACCESS : a) directly       b) by using class name       b) by using object reference name

[smartprogramming]

What is Data-Type ? The type of data that we are inserting into computer is data type for ex. 10 is integer type of data, 'a' is character type of data.

Type of Data Types : Two types of Data Types : 1. Primitive Data Type : 8 type of primitive data type examples are : boolean, char, byte, short, int, long, float, double 2. Non-Primitive Data Type : examples are : String, Arrays, Class, Structure, Stacks etc

Data Type  Default Value  Default size boolean   false   1 bit (but not preciously defined) 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 eight primitive data types supported by the Java programming language are:

byte: The byte data type is an 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive). The byte data type can be useful for saving memory in large arrays, where the memory savings actually matters. They can also be used in place of int where their limits help to clarify your code; the fact that a variable's range is limited can serve as a form of documentation.

short: The short data type is a 16-bit signed two's complement integer. It has a minimum value of -32,768 and a maximum value of 32,767 (inclusive). As with byte, the same guidelines apply: you can use a short to save memory in large arrays, in situations where the memory savings actually matters.

int: By default, the int data type is a 32-bit signed two's complement integer, which has a minimum value of -231 and a maximum value of 231-1. In Java SE 8 and later, you can use the int data type to represent an unsigned 32-bit integer, which has a minimum value of 0 and a maximum value of 232-1. Use the Integer class to use int data type as an unsigned integer. See the section The Number Classes for more information. Static methods like compareUnsigned, divideUnsigned etc have been added to the Integer class to support the arithmetic operations for unsigned integers.

long: The long data type is a 64-bit two's complement integer. The signed long has a minimum value of -263 and a maximum value of 263-1. In Java SE 8 and later, you can use the long data type to represent an unsigned 64-bit long, which has a minimum value of 0 and a maximum value of 264-1. Use this data type when you need a range of values wider than those provided by int. The Long class also contains methods like compareUnsigned, divideUnsigned etc to support arithmetic operations for unsigned long.

float: The float data type is a single-precision 32-bit IEEE 754 floating point. Its range of values is beyond the scope of this discussion, but is specified in the Floating-Point Types, Formats, and Values section of the Java Language Specification. As with the recommendations for byte and short, use a float (instead of double) if you need to save memory in large arrays of floating point numbers. This data type should never be used for precise values, such as currency. For that, you will need to use the java.math.BigDecimal class instead. Numbers and Strings covers BigDecimal and other useful classes provided by the Java platform.

double: The double data type is a double-precision 64-bit IEEE 754 floating point. Its range of values is beyond the scope of this discussion, but is specified in the Floating-Point Types, Formats, and Values section of the Java Language Specification. For decimal values, this data type is generally the default choice. As mentioned above, this data type should never be used for precise values, such as currency.

boolean: The boolean data type has only two possible values: true and false. Use this data type for simple flags that track true/false conditions. This data type represents one bit of information, but its "size" isn't something that's precisely defined.

char: The char data type is a single 16-bit Unicode character. It has a minimum value of '\u0000' (or 0) and a maximum value of '\uffff' (or 65,535 inclusive).

What is the default size of boolean? Boolean doesnt have any default size, JVM allocates the size at runtime.

Why char uses 2 byte in java and what is \u0000 ? It is because java uses Unicode system than ASCII code system. The \u0000 is the lowest range of Unicode system. To get detail explanation about Unicode visit next page.