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Explain the both HashSet and TreeSet?
HashSet is an unordered, unsorted Set.
It's a Collection set which restrict duplicate elements and also repositioning of elements.
It implements Set interface and extends AbstractSet.
Uses hash code of object being inserted.
TreeSet is a Set implemented when we want elements in a sorted order.
Sorting of element is done according to natural order of elements or by help of comparator provided at creation time.
What does WAN stand for? Wide Area Network - A network in that computers are separated through great distances classically across cities or even continents.
Explain Drawing Rectangles in java ? Drawing rectangles is easy. Begin with a Graphics object g and call its drawRect() method: public void drawRect(int x, int y, int width, i
String concatenation and comparison public class StringTest { public static void main(String[] args) { int i = 4; int j = 5; System.out.println ("Hello" + i); // wi
Explain the user defined Exceptions. User Defined Exceptions are the exceptions which are defined by user for specific purposed. This enables custom exceptions to be generated
Asynchronous control
In order to provide portable and reliable EJB elements, the following restrictions apply to EJB code implementation: 1. Avoid using static non-final fields. Defin
Define testing with respect to programming? Testing is the process through that we try to determine the presence defects in a program. Testing is an significant step in soft
write a program in java using array and scanner class to generate padovan series
We may use the java.net.URL and java.net.URLConnection classes to start a standard HTTP connection and "tunnel" to a Web server. The server then gives this information to the s
You are a newly recruited programmer, working for an IT company. This company won a contract to develop a Customer Relationship Management System (CRM) for a major retailer. The CR
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