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Question:
(a) What are the main differences between an object and a class? Illustrate with appropriate examples.
(b) Differentiate between a global variable and a local variable. You may use a simple Java program to illustrate your answer.
(c) What do you understand by the term ‘constructor' in Java? Explain your answer with an appropriate example.
(d) Declare and initialise an array of type float of size 5 to store the marks obtained by a student at his examinations. Initialise the array with the following values {65, 57, 75, 49, 88}.
Write the code fragments in Java to find:
(i) the average mark obtained by the student at the examinations. (ii) the highest mark obtained by the student. (iii) the lowest mark obtained.
Explain how many ways businesses monitor their employees? • Systems are available which monitor almost every key stroke that an employee forms on a computer. • Systems are avai
The == gives true, if the variable reference points to the similar types of object in memory. That is a " shallow comparison ". The equals () - gives the results of run
Explain what is Local Variable ? Declaring variables (using the var keyword) inside a function forms them local. They are available only inside the function and hold no meaning
Determine the types of object oriented programme Classes - Prototypes for objects - Definition or a blueprint of a user-defined datatype - Think of it as a ma
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
RMI uses a layered architecture; every of the layers could be increased or replaced without affecting the rest of the system. The details of layers can be summarised as follows:
Why hub is used in networks? HUB: Hub is networking component that can be used to connect the networks and it could also be used to extend the size of networks. In a simple way
how to give dataset to a decision tree which is written by java using weka software?
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
What do you mean through FTP or File Transfer Protocol? FTP: File transfer protocol was first introduced in the year of 1973; it standardized the transfer of files among comp
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