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Anonymous
Interface is collection of abstract methods which has only declaration and no implementation
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NO, we cannot create a contructor for an interface in java.
yes we can define a variable in an interface in java.
interface is a list of methods which implements that interface
A tagging interface type in Java is an interface that has not defined methods such as the java.io.Serializable interface.
Runnable interface
Yes. This is a valid interface definition in Java: interface Useless {}
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.
Interface Java can be used for a variety of tasks and commands such as .swf files, Java files, running scripts, as well as website video players for websites.
maybe
According to a beginner's book on Java, an interface can't have constructors. Also, the interface itself can't contain the method implementation.
Yes, it is possible to write a keylogger in Java, but you would need to use the Java Native Interface to do so.
Java Native Interface JNI is an interface between java and applications and libraries written in other languages. As an example, JNI enables Java programs to use C libraries and also enables C programs to use Java classes.