In Java, an interface is a suite of methods that multiple different classes are able to implement. Interfaces are not assigned to any particular class. For example, multiple graphics classes can use the same interface to change their size and colour.
An interface in Java is like an abstract class, but there are no method bodies allowed in it and it has to be declared with the interface keyword. It is Java's way of getting around the Deadly Diamond of Death. Only abstract methods and constants are allowed in it.
I guess you mean Java, there is no interface in C++.
Graphical User Interface.
A LinkedList is an implementation of the List interface. It is a collection that is ordered by index position, and the elements are doubly-linked to one another. The linking allows for addition and removal of elements from beginning or end. This class, as of Java 5, also implements the java.util.Queue interface.
Implementation in java mean to accomplish some aim or to execute some order in java software platform. Your class can implement more than one interface, so the implements keyword is followed by a comma with separated list of the interfaces implemented by the class. By convention, the implements clause follows the extends clause, if there is one.
If by interface you mean, a mechanism to achieve abstraction and create a blueprint for future implementation. Java/C#/C++ all allow for multiple interfaces(abstract classes in C++) to be implemented.
J2SE means Java 2 Platform Standard Edition when you are referring to computers and the hardware that is found on the computer. It is needed for everyday computer use.
The term "sexly" has no meaning in the field of computers.
Gui is possibly slang for the full word, "guitar." Otherwise, it is used in computers for the term, "Graphical User Interface."
Subroutine mean what (in java)?
System.out refers to the Java console.
A mouse is a user interface device that provides input to the operating system. It allows the user to easily control a cursor on the screen for selecting objects.