JNTUH · R22 · 183BU

Object Oriented Programming Through Java

Artificial Intelligence and Data Science · II Year · I Semester · February 2024

R22 paper → R25 course map

Coverage, without pretending.

This is an older-regulation practice paper. Every row below is a paraphrased topic map; use the official PDF for the original wording. A green label means the current course explains and practises the idea.

Taught + practisedPartial coverageNot in R25

10 marks

Part A

Compulsory short-answer section: ten one-mark prompts spanning all five units.

Question 1 · all units

Question 1

1(a)

Type conversion and casting

1 mark

Taught + practised

Unit 1: Object Oriented Thinking and Java Basics Same variables, one new rule underneath

1(b)

Java operator categories

1 mark

Taught + practised

Unit 1: Object Oriented Thinking and Java Basics Same variables, one new rule underneath

1(c)

Abstract classes

1 mark

Taught + practised

Unit 2: Inheritance, Packages and Interfaces Same call, different behaviour depending on the real object

1(d)

A class implementing multiple interfaces

1 mark

Taught + practised

Unit 2: Inheritance, Packages and Interfaces A promise about behaviour, with no implementation attached

1(e)

Java annotations

1 mark

Not in this R25 course

Annotations appear in this R22 paper but are not named in the R25 CS303PC syllabus.

1(f)

Creating a custom exception type

1 mark

Taught + practised

Unit 3: Exception Handling and Multithreading When Java's own exceptions are not specific enough

1(g)

The purpose of a scroll pane

1 mark

Taught + practised

Unit 5: Swing GUI Programming Showing a whole collection, not just one value

1(h)

Common Java user-interface components

1 mark

Taught + practised

Unit 5: Swing GUI Programming Building an actual window, at last

1(i)

Swing button component

1 mark

Taught + practised

Unit 5: Swing GUI Programming Building an actual window, at last

1(j)

Limitations of AWT

1 mark

Taught + practised

Unit 5: Swing GUI Programming Building an actual window, at last

50 marks

Part B

Choose one of the two ten-mark questions from each unit.

Unit I · choose Question 2 or 3

Question 2

2(a)

Java data types with examples

5 marks

Taught + practised

Unit 1: Object Oriented Thinking and Java Basics Same variables, one new rule underneath

2(b)

Features of classes and objects

5 marks

Taught + practised

Unit 1: Object Oriented Thinking and Java Basics A class is a blueprint. An object is a house.

Question 3

3(a)

Core object-oriented concepts

5 marks

Taught + practised

Unit 1: Object Oriented Thinking and Java Basics C taught you the machine. This teaches you the model.

Unit 1: Object Oriented Thinking and Java Basics Hiding detail on purpose

3(b)

Java control statements

5 marks

Taught + practised

Unit 1: Object Oriented Thinking and Java Basics The same array, minus the danger

Unit II · choose Question 4 or 5

Question 4

4(a)

Purpose and use of CLASSPATH

5 marks

Taught + practised

Unit 2: Inheritance, Packages and Interfaces Folders for classes, with a compiler that checks them

4(b)

Using super in a Java program

5 marks

Taught + practised

Unit 2: Inheritance, Packages and Interfaces Reaching up to the parent, and locking a class down

Question 5

5(a)

Defining, creating, and accessing packages

5 marks

Taught + practised

Unit 2: Inheritance, Packages and Interfaces Folders for classes, with a compiler that checks them

5(b)

Using final with inheritance

5 marks

Taught + practised

Unit 2: Inheritance, Packages and Interfaces Reaching up to the parent, and locking a class down

Unit III · choose Question 6 or 7

Question 6

try, catch, throw, throws, and finally

10 marks

Taught + practised

Unit 3: Exception Handling and Multithreading Five keywords, one complete failure-handling toolkit

Question 7

7(a)

User threads compared with daemon threads

5 marks

Taught + practised

Unit 3: Exception Handling and Multithreading When two threads touch the same data at once

7(b)

Thread life cycle

5 marks

Taught + practised

Unit 3: Exception Handling and Multithreading More than one thing happening inside one program

Unit IV · choose Question 8 or 9

Question 8

Drawing and rendering with Graphics

10 marks

Partial coverage

Unit 4: Utility Classes, I/O, and Event Handling Positioning components without hardcoding pixel coordinates

The R25 unit names Graphics, but the current lesson only introduces it beside layout management. A dedicated drawing example is still needed.

Question 9

9(a)

Building a simple interface with AWT components

5 marks

Partial coverage

Unit 4: Utility Classes, I/O, and Event Handling Positioning components without hardcoding pixel coordinates

Unit 5: Swing GUI Programming Building an actual window, at last

The course teaches the same component and layout ideas mainly through Swing, with AWT explained for comparison.

9(b)

Handling mouse events

5 marks

Taught + practised

Unit 4: Utility Classes, I/O, and Event Handling Listening for a click without writing six empty methods

Unit V · choose Question 10 or 11

Question 10

10(a)

Model-View-Controller architecture

5 marks

Taught + practised

Unit 5: Swing GUI Programming Building an actual window, at last

10(b)

JApplet compared with JFrame

5 marks

Taught + practised

Unit 5: Swing GUI Programming The syllabus says applet. Modern Java says legacy.

Unit 5: Swing GUI Programming Building an actual window, at last

Question 11

11(a)

Passing parameters to legacy applets

5 marks

Partial coverage

Unit 5: Swing GUI Programming The syllabus says applet. Modern Java says legacy.

The R25 lesson deliberately gives historical context rather than recommending obsolete applet deployment.

11(b)

Using combo boxes for a friendlier interface

5 marks

Taught + practised

Unit 5: Swing GUI Programming Showing a whole collection, not just one value

Provenance

Source: JNTUH Online Student Services. The PDF remains on the university website; Chaduvu Bidda provides the independent topic and study mapping.

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