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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.
tag shows all the errors. iterates over ActionErrors request attribute.
Each time an object is started in Java it goes into the area of memory named as heap. The primitive variables like double and int are allocated in the stack, if they are local inst
Difference between the File and Random Access File classes? Ans) The File class encapsulates the files and directories of the local file system. The Random Access File class giv
need java help[
Define : Authorization is the process by which a program calculates whether a given identity is permitted to access a source such as an application component or a file. Now that y
What is heuristic? Heuristic is a procedure which commonly, but not always, works or that provides nearly the right answer.
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How many JSP scripting elements and what are they? Ans) Three scripting language elements are there: a) declarations, b) scriptlets, c) expressions.
What is JDBC exactly? Describe the steps required to execute a SQL query using JDBC.
Distributed / Network Oriented Java is network friendly -- both in its portable, threaded nature, and since common networking operations are built-in to the Java libraries.
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