What is a Sub class
Sub class: It is a class which extends its super class. The sub-class inherits all the members of its super class. All Java classes are the sub-classes of Object class, which is at the root of inheritance hierarchy.
Null reference: A value utilized to mean, `no object'. Employed whenever an object reference variable is not referring to the object.
Task 3 Explain the effect of the following pictures: 05 FIELD-1 PIC Z(5)9. 05 FIELD-2 PIC £(5)9.99. 05 FIELD-3 PIC £**,***.99. 05 FIELD-4 PIC £££,££9.99DB. 05
Octal character constant: It is a character constant in the form of \ddd, where each d is an octal digit. This might be employed for characters with a Unicode value in the range of 0 to 255.
Specify the different file types?
State: The objects are said to possess state. The present state of an object is symbolized by the joint values of its attributes. Protecting the state of an object from unsuitable inspection or modification is a significant aspect of class design and
Define the term Image map: This is an image, divided into logical regions, each of which has a hot spot.
Assignment operator: The operator (=) employed to store the value of an expression into the variable, for example: Variable = expression; The right-hand
Reflection: It is the ability to find out what fields, methods, constructors, and so forth, are stated for an object or class. Reflection is supported by the Class ‘class’, and other classes in the java.lang.reflect package. Reflection mak
Illustrates XML is an important development.
Briefly describe how Active Server Pages work. How, when, and where they are used.
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