Monthly Archives: November 2018

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Software testing – Brief explanation with easy examples

Software testing – Brief explanation with easy examples This blog explains about Software testing – Brief explanation with easy examples and is given below :  ______________________________________________________________________________ FUNCTIONAL TESTING          It is a type of testing which verifies that each function of the software application operates in conformance with the requirement specification .            This testing mainly involves black box testing and it is not concerned about the source code of the application .             This testing involves checking of user interface , API’s , Database , Security , Client / Server applications and functionality of the application under Test .              The testing can be done either manually or using automation . What do you test  in functional testing ?             The prime objective of the functional testing is checking the functionalities of the  software system . It mainly concentrates on :  Mainline functions : Testing the main functions of an application Basic Usability : It involves basic usability testing of the system . It checks whether an user can freely navigate through the screens without any difficulties . Accessibility : Check the accessibility of the system for the user . Error Conditions : Usage of testing techniques to check for error conditions . It checks whether suitable error messages are displayed . Functional testing Process : 1 ) Understand the requirements 2 ) Identify test input ( test data ) 3 ) Compute the expected outcomes with the selected test input values. 4 ) Execute test cases 5 ) Comparison of actual and computed expected result . Types of Functional Testing : Unit […]

By |November 30th, 2018|Blogs|0 Comments

FSS Fresher Interview Questions with Answers

FSS Fresher Interview Questions with Answers  This blog explains about FSS Fresher Interview Questions with Answers . It is given below : __________________________________________________________1. Explain all the OOPs concepts with example and proper syntax ? Object means a real-world entity such as a pen, chair, table, computer, watch, etc. Object-Oriented Programming is a methodology or paradigm to design a program using classes and objects. It simplifies the software development and maintenance by providing some concepts: Object Class Inheritance Polymorphism Abstraction Encapsulation Object Oriented Programming is a programming concept that works on the principle that objects are the most important part of your program. It allows users create the objects that they want and then create methods to handle those objects. Manipulating these objects to get results is the goal of Object Oriented Programming. Object Oriented Programming popularly known as OOP, is used in a modern programming language like Java        Core OOPS concepts are: Abstraction Encapsulation Polymorphism Inheritance  It simplifies the software development and maintenance by providing some concepts: Object Class Inheritance Polymorphism Abstraction Encapsulation Association Aggregation Composition Object Oriented Programming popularly known as OOP, is used in a modern programming language like Java Encapsulation Encapsulation is the technique used to implement abstraction in object oriented programming. Encapsulation is used for access restriction to a class members and methods. Abstraction Abstraction is the concept of hiding the internal details and describing things in simple terms. For example, a method that adds two integers. The method internal processing is hidden from outer world. There are many ways to achieve abstraction in object oriented programming, such as encapsulation and inheritance. Polymorphism Polymorphism is the concept where an object behaves differently in different situations. There are two types of polymorphism – compile […]

By |November 29th, 2018|Blogs|0 Comments

Sysarc Infomatix Fresher Interview Questions with answers

Sysarc Infomatix Fresher Interview Questions with answers  This blog explains about Sysarc Infomatix Fresher Interview Questions with answers . It is illustrated very well below : ____________________________________________________________________ 1. What do you mean by Abstract class ? Abstraction in Java Abstraction is a process of hiding the implementation details and showing only functionality to the user. A class which is declared with the abstract keyword is known as an abstract class in Java. It can have abstract and non-abstract methods (method with the body). Ways to achieve Abstraction There are two ways to achieve abstraction in java Abstract class (0 to 100%) Interface (100%) Abstract class in Java A class which is declared as abstract is known as an abstract class. It can have abstract and non-abstract methods. It needs to be extended and its method implemented. It cannot be instantiated. An abstract class must be declared with an abstract keyword. It can have abstract and non-abstract methods. It cannot be instantiated. It can have constructors and static methods also. It can have final methods which will force the subclass not to change the body of the method. _________________________________________________________________________ 2. Explain about Access specifiers in java ? Access specifiers for classes or interfaces in Java In Java, methods and data members of a class/interface can have one of the following four access specifiers. The access specifiers are listed according to their restrictiveness order. 1) private 2) default (when no access specifier is specified) 3) protected 4) public But, the classes and interfaces themselves can have only two access specifiers when declared outside any other class. 1) public 2) default  For example, following program fails in compilation. filter_none edit play_arrow brightness_4 //filename: Main.java protected class Test {}   public class […]

By |November 27th, 2018|Blogs|0 Comments

Why should I learn Java ? – A brief review

Why should I learn Java ? –  A brief review  This blog explains about Why should I learn Java ? –  A brief review  . It is illustrated very well below : ________________________________________________________________________ Why should I choose to be a Java developer? Being a mature programming language, there are numerous resources available online that can act as your perfect companion in the learning process. Depending upon your need, you can look for free and paid learning resource to aid yourself. In short, almost any imaginable doubt related to Java has already been asked and answered on the online forums. Almost all devices over the globeruns on the JAVAplatform and it is the most popular programming language ever.  Even if the popularity of the Java language comes down, new languages are being developed on the Java platform.                                         Each and every organization is upgrading new technologies, products and as well as services in this platform. So, it is better to learn new technologies and if I already know java then I cankeep upgrade myself with the industry. Here is another new technology ANDROID DEVELOPMENT. It is one of the most fast growing technology in IT industry.Employers are being hired as Android developers much faster and more in numbers than any other professionals in mobile technology.                                                    Why would you choose java programming language over others? My reasons for preferring Java over other programming languages Price – it’s open source Performance – must faster and reports errors automatically […]

By |November 27th, 2018|Blogs|0 Comments

IS JAVA AN OPEN SOURCE OR NOT ? PART – 2

IS JAVA AN OPEN SOURCE OR NOT ? PART – 2 This blog explains about IS JAVA AN OPEN SOURCE OR NOT ? PART – 2 . It is illustrated very well below :                              We have already discussed about this in the previous blog ” IS JAVA AN OPEN SOURCE OR NOT ? PART – 1 “ _________________________________________________________________________                                 OPEN   SOURCE  SOFTWARE What is open source software? Open source software is software with source code that anyone can inspect, modify and enhance. Open-Source Software Criteria Software redistribution Source code availability and integrity Distribution and properties of licenses Derived works Is open source software free of charge?  Open source software is different. Moreover, some open source licenses stipulate that anyone who alters and shares a program with others must also share that   program’s source code without charging a licensing fee for it. Open-Source Software vs. Free Software Although the terms are often used interchangeably, OSS is slightly different from free software. Both deal with the ability to download and modify software without restriction or charge. However, free software—a concept developed in the 1980s by an MIT computer science researcher, Richard Stallman—is defined by four freedoms are The freedom to run the program as you wish, for any purpose. The freedom to study how the program works, and change it so it does your computing as you wish. Access to the source code is a precondition for this. The freedom to redistribute copies so you can help your neighbor. The freedom to distribute copies of your modified versions to others.     Advantages of Open-Source Software Flexibility Speed Cost-effectiveness […]

By |November 26th, 2018|Blogs|0 Comments

IS JAVA AN OPEN SOURCE OR NOT ? PART – 1

IS JAVA AN OPEN SOURCE OR NOT ? PART – 1  This blog explains about IS JAVA AN OPEN SOURCE OR NOT ? PART – 1 . It is explained very well below :  _________________________________________________________________________ IS JAVA OPEN SOURCE ? Open source software is software with source code that anyone can inspect, modify and enhance. It makes its source code available to others who would like to view that code, copy it, learn from it, alter it or share it. Some software has source code that only the person, team or organization that created it can modify. This kind of software is called closed software.                                There are two types of JDK that is Oracle JDK and Open JDK. There is no major different between open JDK and Oracle JDK. Apart from the base code Oracle JDK includes, Oracle’s implementation of Java plugin and Java webstart. Open JDK is a free and open source implementation of java programming language. It is the result of an effort Sun Microsystems began in 2006. On Nov 13,2006, Sun released much of java as free and open source software,under the terms of the General Public License. Oracle JDK earlier called Sun JDK then it was bought by Oracle. There is no official data on the cost of an Oracle commercial JDK license. To get one business Oracle JDK license, we have to contact Oracle sales specifically.                                                                                 […]

By |November 26th, 2018|Blogs|0 Comments

Core Java Fresher Interview Questions with Answers

 Core Java Fresher Interview Questions with Answers This blog explains about Core Java Fresher Interview Questions with Answers and is given below : ____________________________________________________________________  Mock interview questions: 1.Scanner class: Scanner class is used for for getting inputs of primitive datatypes and string. Scanner is in the package of java.util. 2.Why pointer concept is neglected in Java: Pointer concept can also points the memory address of the data. Using (&-ampersand symbol), we can get the address of the data. So, Java neglects the pointer to make the concept of data security.   3.System.out.print-System is a final class from java.lang package and out is an object for Printstream class and Print is a type of Printstream class. public final class System {     static PrintStream out;     static PrintStream err;     static InputStream in;     … } public class PrintStream extends FilterOutputStream {     //out object is inherited from FilterOutputStream class     public void println() {     … } 4.for vs while loop: for loop and while loop has its difference in the syntax. While loop (condition-controlled loop) is said to be known for unknown iterations but for loop(counter controlled loop) is known for known iterations. For reference : https://www.cs.uic.edu/~jbell/CourseNotes/C_Programming/Looping.html, https://teamtreehouse.com/community/why-use-while-loop-instead-of-for http://java.meritcampus.com/core-java-topics/for-vs-while-loop-in-java http://www.mkyong.com/java/while-loop-for-loop-and-iterator-performance-test-java/ 5.String args[] : command line arguments  as it is collection of variables in the string format or you can say as passing array of string arguments. 6.static variable vs object: You can change the variable with the class name but for nonstatic variables you can change only via objects. For example: class Test{ static int a=10;int b=5} Test t1=new Test(); Test t2=new Test(); Test.a=6;System.out.print(t1.a); System.out.print(t2.a);-both will print 6 as output. But t1.b=10; System.out.print(t1.b); System.out.print(t2.b);-t1 will print as 10&t2 as 5. So, the memory of […]

By |November 26th, 2018|Blogs|0 Comments

How to learn tables from 12 to 19

How to learn tables from 12 to 19  In this blog we are going to discuss about How to learn tables from 12 to 19 and is illustrated below :  _______________________________________________________________________________           Let us begin with 13 table ,                                          13 table                   13 x 1     =  ?                   13 x 2     =  ?                   13 x 3     =  ?                   13 x 4     =  ?                   13 x 5     =  ?                   13 x 6     =  ?                   13 x 7     =  ?                   13 x 8     =  ?                     13 x 9     =  ?                   13 x 10   =  ? We all know that telling 13 table is not that much easier one. But there is a trick finding the multiples of 13 . First of all , write down the table  3         13 x 1     =  03        13 x 2     =  06        13 x 3     =  09       13 x 4     =  12          13 x 5     =  15      13 x 6     =  18     13 x 7     =  21     13 x 8     =  24      13 x 9     =  27    13 x 10   =  30 and then add the digits in the given order ( 1 + 0 , 2 + 0 , … , 9 + 2 , 10 + 3 )                    13 x 1     =  03  =   (1 + 0)3       13 x 2     =  06  =   (2 + 0)6        13 x 3     =  09  =   (3 + 0)9        13 x 4     […]

By |November 24th, 2018|Blogs|0 Comments

Revature Fresher Interview Questions with Answers

Revature Fresher Interview Questions with Answers  This blog explains about Revature Fresher Interview Questions with Answers . It is given below : ____________________________________________________________________ 1. What is Limit, Having Clause in SQL ? A HAVING clause in SQL specifies that an SQL SELECT statement should only return rows where aggregate values meet the specified conditions. It was added to the SQL language because the WHERE keyword could not be used with aggregate functions. The HAVING Clause enables you to specify conditions that filter which group results appear in the results. The WHERE clause places conditions on the selected columns, whereas the HAVING clause places conditions on groups created by the GROUP BY clause. Syntax The following code block shows the position of the HAVING Clause in a query. SELECT FROM WHERE GROUP BY HAVING ORDER BY The HAVING clause must follow the GROUP BY clause in a query and must also precede the ORDER BY clause if used. The SQL HAVING Clause The HAVING clause was added to SQL because the WHERE keyword could not be used with aggregate functions. HAVING Syntax SELECT column_name(s) FROM table_name WHERE condition GROUP BY column_name(s) HAVING condition ORDER BY column_name(s); _______________________________________________________________________________ 2. What is Wrapper class in Java ? Wrapper Classes in Java A Wrapper class is a class whose object wraps or contains a primitive data types. When we create an object to a wrapper class, it contains a field and in this field, we can store a primitive data types. In other words, we can wrap a primitive value into a wrapper class object. Need of Wrapper Classes They convert primitive data types into objects. Objects are needed if we wish to modify the arguments passed into a method […]

By |November 23rd, 2018|Blogs|0 Comments

AGILE METHODOLOGIES in Software Technologies – Part – 2

AGILE METHODOLOGIES in Software Technologies – Part – 2 This blog explains about AGILE METHODOLOGIES in Software Technologies – Part – 2 . It is illustrated very well below :                    We have already about this topic in the previous blog  AGILE METHODOLOGIES in Software Technologies – Part – 1 . _______________________________________________________________________________ Definition of Done:              A Sprint is marked as Done when all the stories are completed, all dev, research, QA tasks are marked ‘Completed’, all bugs are fixed-closed else the ones that can be done later are pulled out and added in the backlog, the code review and unit testing is completed, the estimated hours have met the actual hours put up in the tasks and most importantly a successful demo has been given to the PO and the stakeholders. Activities Done in SCRUM Methodology 1)    Planning Meeting                  A planning meeting is the starting point of Sprint. It is the meeting where the entire scrum team gathers, the SCRUM Master selects a user story based on the priority from the product backlog and the team brainstorms on it.                Based on the discussion, the scrum team decides the complexity of the story and sizes it as per the Fibonacci series. The team identifies the tasks along with the efforts (in hours) which would be done to complete the implementation of the user story.              Many a time, the planning meeting is preceded by a “Pre-Planning meeting”. It’s just like a homework which the scrum team does before they sit for the formal planning meet. The team tries to write down the dependencies or other factors which they would like to discuss in the planning meeting. 2) Execution of […]

By |November 22nd, 2018|Blogs|0 Comments