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int main represents that the function returns some integer even ‘0’ at the end of the program execution. ‘0’ represents the successful execution of a program.The syntax of int main is as follows − int main(){ --- --- return 0; } int main(void) represents that the function takes NO argument. Suppose, if we don’t keep void in the bracket, the function will take any number of arguments.The syntax of int main(void) is as follows − int main(void){ --- --- return 0; } Actually, both seem to be the same but, ... Read More
In Java, abstraction is achieved using Abstract classes and interfaces. Both contains abstract methods which a child class or implementing class has to implement. Following are the important differences between abstract class and an interface. Sr. No. Key Abstract Class Interface 1 Supported Methods Abstract class can have both an abstract as well as concrete methods. Interface can have only abstract methods. Java 8 onwards, it can have default as well as static methods. 2 Multiple Inheritance Multiple Inheritance is not supported. Interface supports Multiple Inheritance. 3 Supported Variables final, non-final, static and non-static variables supported. Only static and final variables are permitted. 4 Implementation Abstract class can implement an interface. Interface can not implement an interface, it can extend ... Read More
In Java, abstraction is achieved using Abstract classes and interfaces. An abstract class contains abstract methods which a child class. Following are the important differences between abstract class and a concrete class. Sr. No. Key Abstract Class Concrete Class 1 Supported Methods Abstract class can have both an abstract as well as concrete methods. A concrete class can only have concrete methods. Even a single abstract method makes the class abstract. 2 Instantiation Abstract class can not be instantiated using new keyword. Concrete class can be instantiated using new keyword. 3 Abstract Method Abstract class may or may not have abstract methods. Concrete clas can not have an abstract method. 4 Final Abstract class can not be declared as ... Read More
Constructors are special methods used to initialize objects whereas methods are used to execute certain statements. Following are the important differences between Constructors and Methods. Sr. No. Key Constructors Methods 1 Purpose Constructor is used to create and initialize an Object. Method is used to execute certain statements. 2 Invocation A constructor is invoked implicitly by the System. A method is to be invoked during program code. 3 Invocation A constructor is invoked when new keyword is used to create an object. A method is invoked when it is called. 4 Return Type A constructor can not have any return type. A method can have a return type. 5 Object A constructor initializes an object which is not existent. A method can be invoked ... Read More
What is PO? PO can be expanded as a Post Office and Probationary Officer. In this article, we will discuss about Post Office. The post office is also known as the Department of Posts and has been the backbone of India as it helps in the growth of social and economic development. It performs many tasks like mail delivery, small savings deposits, life insurance under postal life cover, and a lot more services. Currently, there are more than 155, 000 post offices all over India. History of PO Post Office was established in 1854 but it was started as Company ... Read More
What is RBL? RBL can be expanded as Ratnakar Bank Limited. It is a private bank whose presence can be found in many parts of India. It provides the services listed below − Corporate Banking Branch and Business Banking Retail Assets Treasury and Financial Markets Operations Commercial Banking The bank was started in 1943 and now there are many branches available all over India. Here are some more details in the table below. Aspect Details Number of customers 14.31 million Number of Branches 528 Number of Business Correspondent Branches 1, ... Read More
What is RTGS? RTGS can be expanded as Real-Time Gross Settlement. RTGS is a money transfer system which can be used to transfer money from sender to recipient instantaneously. RTGS is being used successfully in 60 countries and the central bank of a country runs the service. RTGS is used to transfer money of high value and the minimum transfer amount should be ₹2 lakhs. You need to have the IFSC code of the recipient to whom money is to be sent. Other requirements for the recipient include his name, bank branch, account type, and account number. Both sender and recipient banks ... Read More
What is NEFT? NEFT stands for National Funds Transfer System. It is a centralized payment system and can be used all over India. The owner of NEFT is the Reserve Bank of India (RBI). NEFT is one of the fastest ways to transfer money between banks all over India. The bank branch must have to be enabled to have an NEFT transfer. NEFT can be used for online shopping, salary payment, bill payment, etc. How does NEFT Work? Here are the steps that have to be followed while sending money through NEFT. If you want to send money online, ... Read More
What is IDBI? IDBI stands for Industrial Development Bank of India. This bank was founded as a subsidiary of RBI in 1964. The bank was launched with the aim of providing credit and financial facilities to grow the Indian industries. The bank is headquartered in Mumbai and is a popular commercial bank in India. Aims of IDBI IDBI was launched to provide financial assistance to Indian industries in different ways It also helps to diversify different industries Provides assistance to the growth of those industries which help in the growth of India Provides support to different financial institutions ... Read More
Class A class is a blueprint from which individual objects are created. A class can contain any of the following variable types. Local Variables − Variables defined inside methods, constructors or blocks are called local variables. The variable will be declared and initialized within the method and the variable will be destroyed when the method has completed. Instance Variables − Instance variables are variables within a class but outside any method. These variables are initialized when the class is instantiated. Instance variables can be accessed from inside any method, constructor or blocks of that particular class. Class Variables − Class variables are variables declared ... Read More