Not sure in what environment your asking for, but in C programming, %d is an integer (basically a number), %c is a character, that is a single alphanumeric character, where as %s is a series of alphanumeric characters, in programming %s is actually just an array of characters (so multiple %c), but don't worry about that to much.
Examples in c.
int number = 1;
char character = "c"; (numbers (integers) can be characters)
char string[5] = "abcd"; ([5] implies 5 characters, here there are 4, that is because an invisible character exists known as a "null terminator" (\0).
Answer:
A generalized class used only to create related derived classes
Explanation:
An abstract class is a class which cannot be instantiated on its own. It is defined using an abstract keyword. However, an abstract class can be inherited from and the derived class can actually be instantiated. For example:
abstract class A{
}
class B extends A{
void test(){
}
}
Here class A is an abstract class, while class B inherits from A. Now we can create an instance of class B as follows:
B b = new B();
b.test();
A is your answer.............
