Collections in JAVA 3

Starting towards next part of collections in JAVA. Previous part links are given here: Collections in JAVA 1 and Collections in JAVA 2 look at these, Now come towards this post. Iterators:- You can scan (iterate over) a collection using an iterator. The basic Iterator interface enables you to scan forward through any collection. In the case of an iterator over a set, the order is non deterministic. The order of an iterator over a list moves forward through the list elements. A List object also supports a ListIterator, which permits you to scan the…Read more

Collections in JAVA 2

In the collection framework Map interface is also the important core interface. So now we are going to discuss the Map interface. The Map interface:- Maps are sometimes called as associative arrays. The object of a Map interface describes mapping from key to value. By the definition, Map interface does not allow the duplicate elements and a key can map to one value at most. A Map interface does not extend a collection interface because Map interface represents mapping not collection of an object. The sorted map interface extends the Map interface. Some…Read more

Business Process Outsourcing

This article gives the broad information of BPO. BPO is a subset of outsourcing that involves the contracting of the operation and responsibility of specific business function to third party service provider. This was associated with manufacturing firms, such as Coco Cola that outsourced large segments of its supply chain. In that contemporary context, it is primarily used to refer to the outsourcing of services. BPO is categorized into back office outsourcing –which includes internal business function such as human resource or finance and accounting, and front office outsourcing – which includes customer…Read more

Collections API 1

Collection:- Collection is a single object which manages a group of objects. And in collection we call object as an elements. Before the release of the JAVA SE 5.0 collections maintained references to object of type Object so, from that any type of an object can be stored in the collections. After Java SE 5.0 onwards, we can use the generic collections. By using generic collection we can maintain the object without type casting. Collection API which contains interfaces that group objects as one of the following:- Collection:- A group of an objects…Read more

What is Switch Mode Power Supply (SMPS)?

This article gives the information of SMPS devices. SMPS or switched mode power supply is an electronic power supply unit that incorporates a switching regulator. In linear power supply uses a regulator. Linear regulator uses a transistor biased in its active region to specify an output voltage; But in SMPS actively switches a transistor between full saturation and full cut off at a high rate. In SMPS the active device that provides regulation is always operated in a switched mode i.e. it is worked in either in cut off or in saturation. The…Read more

Exception Handling in JAVA 2

‘throw’ keyword:- In above example, exception occurs in implicit manner but our exception explicitly by creating an object or that exception. For throwing an exception explicitly we have to use a ‘throw’ keyword which throws as an exception towards appropriate catch block. e.g. void fun() { int i; try{ System.out.println(“inside a try block.”); i=10/0; }catch(ArithmaticException e) { System.out.println(“inside the 1st catch block.”); throw new ArithmaticException(“my exception.”); } } public static void main(String args[]) { try{ System.out.println(“before calling a function”); fun(); System.out.println(“after calling a function”); } catch(ArithmaticException e) { System.out.println(“inside catch of a main”); //…Read more

What is Processor Mode?

 This article gives the information of Processor Mode. Processor Mode also called as CPU modes or CPU “privilege level”. The CPU modes are used by processor to create an operating environment for automatic. Specifically, the CPU mode controls how the processor sees and manages the system memory and task that use it. There are three different modes of operation but one more mode is added for new 64 bit processor: Real Mode. Protected Mode. Virtual Mode Real Mode. 64 bit extension Mode. Real Mode: The original IBM PC could only address 1MB of…Read more

Applications of MIS in Service

The MIS  [Management Information System] that is used in the manufacturing sector is different from the one that is used in the service sector. We know the difference between manufacturing sector and service sector in manufacturing sector there is product to offer that mean manufacture produces product while in service sector the product and services are not tangible. We do not want to overlook the importance of MIS in both sectors they are equally important. The main intention of MIS in service sector is to provide most satisfying experience to the customer. Manager…Read more

Multithreading and Event Handling in JAVA

Multitasking:- Multiple tasks are performed at a time is called as multitasking. We can perform a multiple tasks with the help of thread or a process. Multithreading:- It is a type of multitasking in which multiple tasks are performed with the help of thread. Multiprocessing:- Multiprocessing is a type of multitasking in which multiple tasks are performed with the help of multiple processes. Multiple Programming:- If the multiple tasks are performed on a multiple processor then it is called as multiple programming. Multicore Programming:- If the multiple tasks are performed with the help…Read more

What is IT Public Policy?

This article gives the broad information of what is IT public Policy. A few years back an important bill that should be interest to all computer professionals and citizens alike was introduced in parliament. The Electronic Delivery of services Bill 2011(EDS 11) aims to ensure the transparency, efficient and accountability in the delivery of public services by making it mandatory for public agencies to provide those electronically. All citizen services such as providing various transaction form and application processing of licenses, certificates and the receipt and payment of money will be available in…Read more